Exploit discussion active in current signal (1 latest mentions)
Recommended action window: High priority (within 72h)
NVD description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20304 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
AVAILABLE
Momentum
STABLE
| Date | Total | Labels |
|---|
| 2026-08-05 | 2 | Disclosure1Patch1 |
| 2026-08-06 | 1 | General1 |
| 2026-08-11 | 1 | Patch1 |
| 2026-08-13 | 1 | Patch1 |
| 2026-09-23 | 1 | Disclosure1 |
Cisco SD-WAN vulnerability CVE-2026-20303 and CVE-2026-20304 reach CVSS 9.9. Cisco urges Catalyst SD-WAN customers to patch now. #Cisco #SDWAN #CVE202620303 #CVE202620304 #CyberSecurity #NetworkSecurity http://securityonline.info/cisco-sd-wan-cve-2026-20303/
Post summary
Cisco alerts that high‑severity vulnerabilities (CVE‑2026‑20303 and CVE‑2026‑20304) affect SD‑WAN, and urges customers to apply patches immediately.
Cisco Catalyst SD-WAN の複数の深刻な脆弱性が FIX：不適切な入力検証やアクセス・コントロール https://iototsecnews.jp/2026/08/06/cisco-patched-multiple-critical-vulnerabilities-in-catalyst-sd-wan-update-now/ Cisco Catalyst SD-WAN Software において、入力検証の不備やアクセス制御の問題などに起因する複数の深刻な脆弱性が発見されました。対象となる CVE は CVE-2026-20303／CVE-2026-20304／CVE-2026-20310 (CVSS：9.9)、CVE-2026-20312 (CVSS：8.8)、CVE-2026-20313 (CVSS：7.7) です。これらを悪用されると、機密情報の露出や不正なファイルアクセスなど、システム全体へ甚大な被害が及ぶ恐れがあります。回避策となる設定変更が存在しないため、修正済みバージョンへのアップデートが必要です。運用環境の更新状況を確認し、迅速に対応を進めてください 。 #CatalystSDWAN #Cisco #CVE202620303 #CVE202620304 #CVE202620310 #CVE202620312 #CVE202620313 #Vulnerability
Post summary
Cisco's Catalyst SD‑WAN software contains several critical vulnerabilities (CVE‑2026‑20303/04/10/12/13) that have been patched; users are advised to update to the repaired version as no mitigating configuration exists.
CVE-2026-20304: Cisco Catalyst SD-WAN Improper Access Control Flaw — What It Means for Your Business and How to Respond https://hubs.li/Q04y6GLq0
Post summary
The text announces CVE-2026-20304, an Improper Access Control vulnerability in Cisco Catalyst SD-WAN, and discusses its potential business impact without detailing a named exploit, patch, or active exploitation.
Cisco, SD-WAN ve IOS XE'de Üçü CVSS 9.9 Olan 12 Kritik Açığı Kapattı Cisco, iç güvenlik incelemesi kapsamında Catalyst SD-WAN ve IOS XE yazılımlarını etkileyen 12 açığı kapatan güncellemeler yayınladı; SD-WAN tarafındaki üç açık maksimuma yakın CVSS 9.9 aldı! • CVE-2026-20303, CVE-2026-20304 ve CVE-2026-20310 (üçü de CVSS 9.9), sırasıyla giriş doğrulaması ve yol geçişi eksikliği, yetersiz erişim kontrolü ve bağlantı çözümleme sırası hatasından kaynaklanıyor; ayrıca CVSS 8.8'lik açık metin hassas veri depolama sorunu da bulunuyor. • IOS XE tarafında CVE-2026-20267 ile CVE-2026-20273 arasındaki yedi açık, arabellek taşması, komut enjeksiyonu ve giriş doğrulaması eksikliklerini kapsıyor; en yüksek CVSS puanı 9.8. • Cisco, bu açıkların şu ana kadar aktif olarak istismar edildiğine dair bir bilgi bulunmadığını açıkladı; ancak sistem yönetim arabirimini etkileyen ayrı bir açık olan CIMCown (CVE-2026-20200) için halka açık kanıt kodu zaten mevcut. Kurumsal ağların omurgasını oluşturan SD-WAN ve yönlendirici yazılımlarında aynı anda bu kadar çok maksimum puanlı açığın ortaya çıkması, ağ ekiplerinin güncelleme önceliklerini yeniden gözden geçirmesini gerektiriyor. #SiberGüvenlik #Cisco #SDWAN
Post summary
Cisco released updates for 12 critical SSL‑WAN and IOS XE CVEs, including a public PoC for one vulnerability, but reports no evidence of active exploitation yet.
CVE-2026-20303およびCVE-2026-20304：Cisco SD-WANの脆弱性がCVSSスコア9.9に該当 CVE-2026-20303 & CVE-2026-20304: Cisco SD-WAN Flaws Hit CVSS 9.9 #DailyCyberSecurity (Aug 5) https://securityonline.info/cisco-sd-wan-cve-2026-20303/
Post summary
The post announces two high‑severity CVE vulnerabilities (CVSS 9.9) impacting Cisco SD‑WAN, offering only the severity score without any exploit, patch, or deeper technical details.
🚨 CRITICAL — CVE-2026-20304 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering … CVSS 9.9 🔴 No patch yet Full analysis → https://sec.kaitan.id/cves/CVE-2026-20304 #Cisco #CyberSecurity #InfoSec
Post summary
Cisco has disclosed a new critical vulnerability, CVE‑2026‑20304, with a CVSS score of 9.9 and no patch available yet, and no evidence of PoC, exploit, or active exploitation.