CVE-2008-4128Active Exploitation(cisco / 871_integrated_services_router)

MEDIUMCVSS 8.1 · HIGHCISA KEV

Exploitation observed; activity peaked at 10 mentions and remains active

Immediate actions

  • Patch cisco 871_integrated_services_router systems immediately
  • Assume compromise if assets are exposed
  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft

Recommended action window: Immediate (within 24h)

NVD description

Multiple cross-site request forgery (CSRF) vulnerabilities in the HTTP Administration component in Cisco IOS 12.4 on the 871 Integrated Services Router allow remote attackers to execute arbitrary commands via (1) a certain "show privilege" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI. NOTE: some of these details are obtained from third party information.

5.5/ 10 priority

Sources & remediation

Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2026-07-16. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Weakness type (CWE)
CWE-352

Priority

MEDIUM

Exploitation

ACTIVE

PoC

YES

Patch

AVAILABLE

Momentum

DECLINING

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • 871_integrated_services_router
  • ios

Threat summary

  • Active exploitation appears in 11 classified signals
  • Public PoC is present in monitored signal
  • Patch or workaround signal is available
  • 17 mentions across 7 observed days

What's happening

  • Active exploitation reported across 11 signals
  • PoC mentioned or linked in 1 signal
  • Patch or workaround mentioned in 8 signals
  • Technical details provided in 16 signals
  • Disclosure: 2 classified signals
  • Peaked 5d ago at 10 mentions (2026-07-14); latest day: 1
  • 17 total mentions across 7 days

Affected systems

Vendors
Products
871_integrated_services_routerios

2 versions affected across 2 products

Deep dive

Activity timeline17 mentions / 7d
035810Mentions · 2026-07-13: 2Mentions · 2026-07-14: 10Mentions · 2026-07-16: 1Mentions · 2026-07-17: 1Mentions · 2026-07-22: 1Mentions · 2026-07-28: 1Mentions · 2026-08-05: 1PoC Mentioned / Linked · 2026-07-14: 1Active Exploitation · 2026-07-13: 2Active Exploitation · 2026-07-14: 5Active Exploitation · 2026-07-16: 1Active Exploitation · 2026-07-22: 1Active Exploitation · 2026-07-28: 1Active Exploitation · 2026-08-05: 1Patch / Workaround · 2026-07-13: 1Patch / Workaround · 2026-07-14: 4Patch / Workaround · 2026-07-16: 1Patch / Workaround · 2026-07-22: 1Patch / Workaround · 2026-08-05: 1Technical Details · 2026-07-13: 2Technical Details · 2026-07-14: 9Technical Details · 2026-07-16: 1Technical Details · 2026-07-17: 1Technical Details · 2026-07-22: 1Technical Details · 2026-07-28: 1Technical Details · 2026-08-05: 107-1307-1407-1607-1707-2207-2808-05
Signal classification4 categories
Active Exploitation
1058.8%
Patch
423.5%
Disclosure
211.8%
General
15.9%
Referenced assets15 URLs
Classification over time
DateTotalLabels
2026-07-132
Active Exploitation1Patch1
2026-07-1410
Active Exploitation5Disclosure1General1Patch3
2026-07-161
Active Exploitation1
2026-07-171
Disclosure1
2026-07-221
Active Exploitation1
2026-07-281
Active Exploitation1
2026-08-051
Active Exploitation1
Full discourse17 posts
  • mRr3b00t@UK_Daniel_Card
    Active Exploitation

    Daniel's Daily Threat Intel & CVE Briefing (from claude) Tue 15 Jul 2026 Top of the stack: Microsoft's July Patch Tuesday (14 Jul) is the day's priority — a record ~570 Microsoft CVEs with two actively-exploited zero-days, both privilege-escalation bugs in identity infrastructure (AD FS and SharePoint). Patch those two first. In parallel, CISA added a decades-old Cisco IOS CSRF flaw (CVE-2008-4128) to KEV on 13 Jul after confirmed exploitation — audit legacy IOS management planes. Three items are flagged actively-exploited today. 1. CISA KEV / Actively Exploited (lead) CVE-2008-4128 — Cisco IOS CSRF → arbitrary command execution. Added to KEV 13 Jul 2026; confirmed in-the-wild exploitation of an 18-year-old flaw in the IOS web management interface. So what: internet-exposed or poorly-segmented IOS device web UIs are being abused for command execution — disable the HTTP(S) server or lock it behind ACLs. (SecurityAffairs, SC Media) CVE-2026-56155 — Microsoft AD FS EoP (CVSS 7.8), actively exploited. Local privilege escalation via insufficient access-control granularity in AD FS (see MS section). (ZDI) CVE-2026-56164 — Microsoft SharePoint EoP (CVSS 5.3), actively exploited. Missing authentication for a critical function, network-reachable, no user interaction. (BleepingComputer) Same-week KEV wave (7–10 Jul), all exploited — worth confirming remediation if in scope: Adobe ColdFusion path traversal → RCE (CVE-2026-48282); Langflow auth-bypass/IDOR (CVE-2026-55255) — noted as the first AI-agent platform added to KEV; and Joomla-ecosystem file-upload/access-control bugs (JoomShaper SP Page Builder CVE-2026-48908, Joomlack CVE-2026-56290, Balbooa CVE-2026-56291, iCagenda CVE-2026-48939). (The Hacker News, SecurityWeek) 2. Edge / Network Gear Quiet in the strict 24–48h window aside from the Cisco IOS KEV item above (CVE-2008-4128) — treat that as the actionable edge item today. No newly-corroborated critical Fortinet/Palo Alto/Citrix/Ivanti/SonicWall advisories published in the last day; the recent SecurityWeek Fortinet/Ivanti critical set (FortiSandbox CVE-2026-25089 CVSS 9.8, Ivanti Sentry CVE-2026-10520 CVSS 10.0) dates to mid-June and should already be in your patch cycle. 3. Microsoft / Windows / Active Directory Patch Tuesday, 14 Jul 2026 — largest on record. ~570 Microsoft-issued CVEs (≈621 counting all republished/third-party CVEs addressed); 59–63 rated Critical, ~48 of them RCE. (Tenable, ZDI) CVE-2026-56155 — AD FS EoP (7.8), exploited. Local EoP; high value in federated-identity environments. Patch AD FS servers first. CVE-2026-56164 — SharePoint EoP (5.3), exploited. Unauthenticated, network-based privilege escalation via missing auth — SharePoint remains under sustained attack (distinct from the CVE-2026-45659 RCE added to KEV on 1 Jul). Patch on-prem SharePoint immediately. CVE-2026-50661 — BitLocker security-feature bypass, publicly disclosed (not yet exploited). Requires physical access to reach encrypted data — relevant to lost/stolen-device and evil-maid threat models. So what: two of the three zero-days are identity/domain-compromise primitives — sequence AD FS and SharePoint ahead of the broader 570-CVE backlog. 4. Web / Cloud / DevOps Adobe ColdFusion CVE-2026-48282 (path traversal → RCE) and Langflow CVE-2026-55255 (auth-bypass IDOR — authenticated users can execute other users' flows) are both actively exploited and in KEV as of this week. If you run ColdFusion or Langflow (LLM/agent app builder), patch now. (http://Threat-Modeling.com) Adobe's July batch also included a ColdFusion CVSS 9.9 issue (not yet exploited) — standard-priority patch. (ZDI) No fresh corroborated Kubernetes/critical supply-chain 0-day in the 24h window; ongoing npm/PyPI credential-stealer campaigns continue as background noise. Watch / developing Langflow's KEV entry signals attackers are now hunting AI-agent/LLM orchestration platforms as an access vector — inventory any internet-exposed Langflow/agent tooling. Also watch the sheer triage load from the 570-CVE Patch Tuesday: with 48 critical RCEs, expect rapid PoC development over the coming days beyond the three flagged zero-days. Sign-off: 3 items flagged as actively exploited today (CVE-2026-56155, CVE-2026-56164, CVE-2008-4128), with a cluster of 4–6 additional exploited KEV entries from earlier this week still worth confirming as patched. Sources: CISA — CVE-2008-4128 Cisco IOS added to KEV (SecurityAffairs) ZDI — July 2026 Security Update Review BleepingComputer — July 2026 Patch Tuesday, 3 zero-days Tenable — July 2026 Patch Tuesday analysis The Hacker News — Adobe/Joomla/Langflow KEV additions SecurityWeek — CISA urges patching ColdFusion, Langflow, Joomla http://Threat-Modeling.com — CVE-2026-55255 Langflow IDOR SC Media — CISA adds Cisco IOS flaw to KEV

    Post summary

    The briefing highlights several actively exploited CVEs, notably Microsoft AD FS and SharePoint privilege‑escalation bugs and an old Cisco IOS CSRF flaw, and urges immediate patching of these vulnerabilities.

    33032123.8K
    125.1K followersView on X
  • CISA Cyber@CISACyber
    Active Exploitation

    Our joint advisory with @NSACyber & partners details TTPs Russian cyber actors are using to target routers & network devices in #CriticalInfrastructure sectors, including exploitation of Cisco vulnerabilities CVE-2018-0171 & CVE-2008-4128. More info: 🔗https://go.dhs.gov/5QP https://t.co/tUnLO9fh5E

    Post summary

    The advisory reports that Russian cyber actors are actively exploiting Cisco CVE-2018-0171 and CVE-2008-4128 against routers and network devices in critical infrastructure.

    31402087.1K
    302.1K followersView on X
  • piyokango@piyokango
    Active Exploitation

    米国CISAが悪用を確認した脆弱性 #KEV をカタログに追加しました。(7/13追加) 🛡CVE-2008-4128 ✅概要 ・深刻度:注意 4.3 (CVSS Base) / CISA-ADP ・種別:クロスサイトリクエストフォージェリ (CWE-352) ・CVSS:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Cisco IOS 12.4 の 871 Integrated Services Router における HTTP Administration コンポーネントに存在する、複数のクロスサイトリクエストフォージェリの脆弱性です。 リモート攻撃者は、管理者などのユーザーに細工したリクエストを送信させることで、HTTP Administration 経由で任意のコマンドを実行できる可能性があります。 ✅ChatGPTによる脆弱性評価 ・国内影響度:高 ・悪用難易度:中 ✅CISA 評価 ・攻撃自動化:自動化は困難 ・技術的影響:部分的 ・BOD 26-04 対処期限(露出あり):2026年7月16日 ・BOD 26-04 対処期限(露出なし):2026年7月27日 ✅攻撃前提条件 ・Cisco IOS 12.4 を実行する Cisco 871 Integrated Services Router を使用している ・HTTP Administration コンポーネントが有効である ・攻撃者が標的ユーザーに細工したリクエストを送信させる必要がある ・標的ユーザーが影響を受ける HTTP Administration にアクセス可能な状態である ・修正済みソフトウェア、緩和策、または該当機器・ソフトウェアの利用停止が実施されていない ✅悪用時影響 ・/level/15/exec/- URI に対する特定の show privilege コマンドを介して任意コマンドを実行される可能性がある ・/level/15/exec/-/configure/http URI に対する特定の alias exec コマンドを介して任意コマンドを実行される可能性がある ・Cisco IOS 機器の管理機能を不正操作される可能性がある ・ネットワーク機器の設定変更、情報取得、追加侵害の足掛かりに利用される可能性がある ✅悪用事例等に関する公開情報 ・PoC/Exploit:公開済み ・ITW:未確認 ✅関連情報 ・https://nvd.nist.gov/vuln/detail/CVE-2008-4128 ・https://www.cve.org/CVERecord?id=CVE-2008-4128 ・https://github.com/cisagov/vulnrichment/blob/develop/2008/4xxx/CVE-2008-4128.json ・https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2008-4128 ・https://www.cisco.com/c/en/us/obsolete/ios-nx-os-software/cisco-ios-software-releases-12-4-mainline.html https://www.cisa.gov/news-events/alerts/2026/07/13/cisa-adds-one-known-exploited-vulnerability-catalog #vulnerability

    Post summary

    CISA confirmed exploitation of CVE‑2008‑4128, a CSRF vulnerability in Cisco IOS 12.4, which appears to have published PoC/Exploit code and issued risk assessments, but no patch or mitigation is detailed in the text.

    0401936.1K
    44.2K followersView on X
  • Rahmi Demir ⭐⭐⭐⭐⭐@rahmid3mir
    Patch

    🪲🪲🪲 Siber Güvenlik Zaafiyet Bülteni #SiberGüvenlik #GüvenlikBülteni Merhaba #Brolyz #Zafiyet: #Cisco IOS - Siteler Arası İstek Sahtekarlığı (Cross-Site Request Forgery - CSRF) CVE Kodu: CVE-2008-4128 Zafiyet Türü: Siteler Arası İstek Sahtekarlığı (CWE-352) Fidye Yazılımı (Ransomware) Faaliyeti: Bilinmiyor 📌 Zafiyetin Özeti Cisco IOS 12.4 sürümünde, uzaktan saldırganların rastgele komutlar çalıştırmasına olanak tanıyan birden fazla siteler arası istek sahtekarlığı (CSRF) zafiyeti tespit edilmiştir. Bu güvenlik açığı, (1) /level/15/exec/- URI dizinine yönelik belirli bir "show privilege" komutu ve (2) /level/15/exec/-/configure/http URI dizinine yönelik belirli bir "alias exec" komutu aracılığıyla istismar edilebilmektedir. 🛠️ Alınması Gereken Aksiyonlar 👉 Yama ve Güncelleme: Üretici tarafından yayınlanan güvenlik güncellemelerini ve hafifletici önlemleri (mitigations) ivedilikle test ve prod ortamlarınıza uygulayın. 👉 Risk ve Uyumluluk: CISA'nın BOD 26-04 (Risk Temelli Güvenlik Güncellemelerinin Önceliklendirilmesi) ve Adli Bilişim Triyaj Gereksinimleri yönergelerine uygun hareket edin. 👉 Erişim Kontrolü: İlgili varlıkların internete maruz kalma durumunu (internet exposure) değerlendirin ve yetkisiz erişimleri engellemek için gerekli yapılandırmaları sağlayın. 👉 İzolasyon: Eğer bulut servisleri veya on-prem sistemler için geçerli bir yama veya hafifletici önlem henüz bulunmuyorsa, zafiyet giderilene kadar ürünün kullanımını durdurun veya dış ağ erişimini tamamen kısıtlayın.

    Post summary

    The bulletin reports a CSRF vulnerability (CVE‑2008‑4128) in Cisco IOS 12.4, gives technical exploit details, and strongly advises applying vendor patches and mitigations.

    0304038
    530 followersView on X
  • PCMedicalist@PCMedicalist
    Patch

    🔐 Daily Security & Standards Brief (Jul 14) • CVE-2008-4128 — Cisco IOS Cross-Site Request Forgery Vulnerability — CISA KEV Vulns → track CVE-2008-4128 and patch Cisco IOS Cross-Site Request Forgery. Full digest 👇 via PCMedicalist · http://pcmedicalist.com Full digest 👇 via PCMedical…

    Post summary

    The tweet highlights CVE‑2008‑4128, a Cisco IOS XSRF vulnerability listed as a CISA KEV, and strongly advises tracking and applying the appropriate patch.

    0002051
    116 followersView on X
  • Israel@f1tym1
    Active Exploitation

    CISA added CVE-2008-4128, a Cisco IOS CSRF vulnerability, to its Known Exploited Catalog based on active exploitation evidence. https://ift.tt/opSjzRT

    Post summary

    CISA confirmed that CVE-2008-4128 is being actively exploited in the wild, adding it to its Known Exploited Catalog.

    0001153
    1.0K followersView on X
  • iototsecnews@iototsecnews
    Active Exploitation

    CISA KEV 警告 26/07/13:Cisco IOS の脆弱性 CVE-2008-4128 を KEV に登録 https://iototsecnews.jp/2026/07/14/cisa-warns-of-decades-old-cisco-ios-vulnerability-actively-exploited-in-attacks/ この記事が取り上げる Cisco IOS の脆弱性 CVE-2008-4128 は、Web 管理画面に存在する仕組みの不備を突いて、攻撃者が管理者になりすましてネットワーク機器を勝手に操作できてしまう CSRF という問題に起因します。影響を受ける古いデバイスを使い続けていると、ルータやスイッチの設定が書き換えられ、社内ネットワーク全体の通信に対する深刻な被害へと至る恐れがあります。確実な対策としては、速やかに最新の安全なバージョンへアップデートすることですが、難しい場合は不要な Web 管理機能を無効にするか、管理画面へのアクセスを信頼できる特定のIPアドレスからのみに厳しく制限する必要があります。 #Cisco #CVE20084128 #Exploit #iOS #KEV #Vulnerability

    Post summary

    The post reports that CVE‑2008‑4128, a CSRF vulnerability in Cisco IOS web administration, is being exploited in the wild and advises patching or disabling the vulnerable feature.

    01000188
    500 followersView on X
  • CAIS/RNP@caisRNP
    Disclosure

    O CAIS alerta a comunidade de segurança cibernética sobre a CVE-2008-4128 no Cisco IOS 12.4, que permite execução de comandos via administração HTTP. Mais informações: https://bit.ly/4fGFrWl

    Post summary

    CAIS alerted the cybersecurity community about CVE‑2008‑4128, a Cisco IOS 12.4 vulnerability that permits command execution via HTTP administration, and provided a link for further details.

    10000250
    2.4K followersView on X
  • PCMedicalist@PCMedicalist
    General

    🟦 PCMedicalist Signal · Jul 14 • IETF Community Survey 2025 — IETF Blog • CVE-2008-4128 — Cisco IOS Cross-Site Request Forgery Vulne… — CISA KEV Vulns #VulnerabilityIntelligence #Standards SecOps · Blue Team · Autonomous Builds https://t.co/xLAMcC8asq

    Post summary

    The tweet identifies CVE‑2008‑4128 as a cross‑site request forgery vulnerability listed in CISA’s KEV but contains no details on exploitation, patches, or active use.

    0001057
    116 followersView on X
  • PCMedicalist@PCMedicalist
    Patch

    • CVE-2008-4128 — Cisco IOS Cross-Site Request Forgery Vulnerability — CISA KEV Vulns → track CVE-2008-4128 and patch Cisco IOS Cross-Site Request Forgery. Full brief 👇 #VulnWatch PCMedicalist Vuln Watch · http://pcmedicalist.com https://t.co/fEp1OE1Lzg

    Post summary

    The post highlights the 2008 Cisco IOS cross‑site request forgery vulnerability, identifies it as a CISA KEV, and urges tracking and patching without providing PoC or exploitation details.

    0001045
    116 followersView on X
  • SecEngCyGy@snypet86
    Active Exploitation

    CISA KEV: CVE-2008-4128 - 18-year-old Cisco IOS CSRF. HTTP admin on IOS 12.4 (EOL). Active exploitation. FCEB due July 16. Inventory EOL Cisco still online. Kill public management. Replace or isolate. https://nvd.nist.gov/vuln/detail/CVE-2008-4128 #CISA

    Post summary

    CISA warns that CVE-2008-4128, an 18‑year‑old CSRF flaw in Cisco IOS 12.4, is actively exploited in the wild; affected systems should be replaced or isolated while a vendor patch is anticipated.

    0000054
    23 followersView on X
  • UWillC@uwillc
    Active Exploitation

    CISA just gave agencies three days to deal with a vulnerability from 2008. CVE-2008-4128. CSRF in the web management interface of Cisco IOS 12.4, the software on a Cisco 871 branch router. Hardware end-of-life for over a decade. Added to the Known Exploited Vulnerabilities catalog July 13. Deadline July 16. Three days. The reason: a Russian state-sponsored group is actively exploiting legacy and poorly configured routers, per a joint advisory from US and allied agencies this month. An eighteen-year-old bug, on a router nobody remembers installing, is a nation-state target in 2026. End-of-life is a vendor status. It is not a network state. What is the oldest IOS version still passing packets in your network?

    Post summary

    CISA alerts that a 2008 CSRF flaw in legacy Cisco routers is being actively exploited, granting agencies only three days to mitigate the threat, but no patch details are offered.

    00000131
    495 followersView on X
  • TECHEPAGES@techepages
    Active Exploitation

    CISA has added CVE-2008-4128 — a 17-year-old CSRF flaw in Cisco IOS 12.4 on Cisco 871 ISR routers — to its KEV list, citing active exploitation in 2026. Federal agencies got one of the tightest deadlines ever: July 16, 2026. 🔹 Cisco 871 ISR is EOL — no patch available, so BOD 26-04 mandates device retirement 🔹 Immediate mitigation: disable HTTP admin (no ip http server), manage via SSH 🔹 Monitor logs for requests hitting /level/15/exec/- patterns 🔹 Part of a wider trend: attackers targeting ancient flaws in legacy Cisco, Fortinet & Juniper gear

    Post summary

    CISA’s KEV entry for CVE‑2008‑4128 highlights confirmed active exploitation in 2026, urging immediate device retirement and SSH‑only management due to lack of a patch.

    0000088
    21 followersView on X
  • BREACHSPIDER@breachspider
    Active Exploitation

    [KEV Alert] CVE-2008-4128: CSRF in Cisco IOS 12.4 HTTP Administration Exposes Command Execution on Edge Routers https://breachspider.com/intel/2026-07-14-cve-2008-4128-csrf-in-cisco-ios-12-4-http-administration-exp #ICS #OTSecurity #SCADA #CriticalInfrastructure

    Post summary

    The post announces that CVE-2008-4128—an HTTP administration CSRF flaw in Cisco IOS 12.4—is actively exploited in the wild to achieve command execution on edge routers.

    0000053
    2.3K followersView on X
  • SecNews@SecNews_GR
    Disclosure

    CVE-2008-4128: η CISA προσθέτει CSRF του Cisco IOS στον κατάλογο KEV https://secn.ws/LzgDBG

    Post summary

    The statement announces that CISA has added CVE‑2008‑4128, a CSRF vulnerability in Cisco IOS, to its Known Exploited Vulnerabilities (KEV) list, providing a technical brief but no exploitation details.

    00000112
    7.0K followersView on X
  • Security Arsenal, LLC@SecurityAr58409
    Active Exploitation

    🔒 #CyberSecurity CVE-2008-4128: Cisco IOS CSRF Exploitation — CISA KEV Alert and Defensive Guide "On July 13, 2026, the Cybersecurity and Infrastructure Security Agency (CISA) added…" 🔗 https://securityarsenal.com/blog/cve-2008-4128-cisco-ios-csrf-exploitation-cisa-kev-alert-and-defensive-guide #CyberSecurity #ThreatIntel #cve20084128 #critical #cisakev

    Post summary

    The entry alerts that CVE-2008-4128, a Cisco IOS CSRF vulnerability, is meeting a CISA KEV alert and is believed to be actively exploited, yet no PoC, exploit code, patch, or corrected false‑positive status is provided.

    0000083
    19 followersView on X
  • DFIR Lab@DFIR_Lab
    Patch

    #CRITICAL CVE-2008-4128: Cisco IOS 12[.]4 CSRF vulnerability allows remote code execution via HTTP interface. CISA KEV-listed—patch immediately. Affects legacy IOS devices still in production. #CVE #PatchNow #ThreatIntel https://t.co/S7rxl7w3fl

    Post summary

    The tweet warns that Cisco IOS 12.x devices are vulnerable to a critical CSRF flaw (CVE‑2008‑4128) enabling remote code execution, cites CISA KEV status, and urges immediate patching of legacy devices.

    0000044
    71 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
HWcisco871_integrated_services_router---
OSciscoios12.4--

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