CVE-2026-7538General

LOWCVSS 8.9 · HIGH

Signal is active with 6 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function Vulnerability of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument proto leads to os command injection. The attack may be initiated remotely. The exploit is publicly available and might be used.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-77CWE-78

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 11 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 5 signals
  • General: 7 classified signals
  • Disclosure: 3 classified signals
  • Peaked at 6 mentions on most recent observed day (2026-05-15)
  • 11 total mentions across 2 days

Deep dive

Activity timeline11 mentions / 2d
02356Mentions · 2026-05-01: 5Mentions · 2026-05-15: 6Patch / Workaround · 2026-05-01: 1Technical Details · 2026-05-01: 1Technical Details · 2026-05-15: 405-0105-15
Signal classification3 categories
General
763.6%
Disclosure
327.3%
Patch
19.1%
Referenced assets5 URLs
Classification over time
DateTotalLabels
2026-05-015
Disclosure2General2Patch1
2026-05-156
Disclosure1General5
Full discourse11 posts
  • Lyrie.ai@lyrie_ai
    General

    Unpopular opinion: The cybersecurity industry is selling you dashboards. CVE: CVE-2026-7538 CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory

    Post summary

    The text references CVE-2026-7538 with a critical CVSS score but offers no proof of concept, exploit, patch, or evidence of active exploitation.

    1001050
    215 followersView on X
  • Lyrie.ai@lyrie_ai
    General

    https://lyrie.ai/research/research/cve-2026-7538-advisory #lyrie #cybersecurity #CVE #threatintel #zerodayattack

    Post summary

    The provided text only lists a link and hashtags without any substantive information about the CVE, so no actionable intelligence can be drawn.

    0001031
    215 followersView on X
  • Lyrie.ai@lyrie_ai
    Disclosure

    CVE: CVE-2026-7538 CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory A vulnerability was identified in Totolink A8000RU 7.1cu.643b20200521.

    Post summary

    The text announces the discovery of CVE‑2026‑7538 in a Totolink router model, providing CVSS metrics and severity but no PoC, exploit, or mitigation information.

    1000030
    215 followersView on X
  • Lyrie.ai@lyrie_ai
    General

    CRITICAL: CVE-2026-7538 (CVSS 9.8) — multiple products. CVE: CVE-2026-7538 CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory

    Post summary

    The post merely lists a critical CVE and its CVSS score, with no further details on exploitation, patches, or proofs of concept.

    1000031
    215 followersView on X
  • Lyrie.ai@lyrie_ai
    General

    References CVE: CVE-2026-7538 CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory

    Post summary

    The text lists CVE-2026-7538 with a CVSS score of 9.8 and critic severity, but provides no additional context such as PoC, exploit, or mitigation.

    1000035
    215 followersView on X
  • CVE@CVEnew
    General

    CVE-2026-7538 A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function Vulnerability of the file /cgi-bin/cstecgi.cgi of the component … https://www.cve.org/CVERecord?id=CVE-2026-7538

    Post summary

    The post simply references the existence of CVE‑2026‑7538 affecting a specific file in the Totolink A8000RU, without providing additional technical details, exploitation evidence, or mitigation information.

    00010141
    57.4K followersView on X
  • Orizon@OrizonCyber
    Patch

    🚨 CVE-2026-7538 — CVSS 9.8/10 ██████████ A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function Vulnerability... Severity: CRITICAL Patch now. #cybersecurity #CVE https://t.co/8Etmivj4K8

    Post summary

    The tweet announces a critical CVE-2026-7538 affecting Totolink devices and highlights the availability of a patch, without detailing the vulnerability or exploitation.

    1000037
    26 followersView on X
  • Lyrie.ai@lyrie_ai
    General

    https://lyrie.ai/research/research/cve-2026-7538-advisory #lyrie #cybersecurity #CVE #threatintel #zerodayattack

    Post summary

    The tweet links to an advisory on CVE‑2026‑7538 but provides no concrete information about PoC, exploit code, active exploitation, patches, or technical details.

    0000030
    215 followersView on X
  • CVEarity@CVEarity
    General

    ⚡ New CVE Alert: CVE-2026-7538 📊 Severity: 9.8 🚨 Risk Level: Critical 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-7538 #CVE-2026-7538 #CVE #Critical #CyberSecurity #InfoSec https://t.co/Odk6vZFRxP

    Post summary

    The tweet announces CVE-2026-7538 as a critical vulnerability but provides no PoC, exploit code, active use, patch, or detailed technical information.

    0000049
    151 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-7538 A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function Vulnerability of the file /cgi-bin/cstecgi.cgi of the component … https://www.cve.org/CVERecord?id=CVE-2026-7538 ----- Traducción: CVE-2026-7538 Se … http://infoflow.cloud`

    Post summary

    A new vulnerability (CVE‑2026‑7538) affecting the Totolink A8000RU router’s /cgi-bin/cstecgi.cgi component was disclosed via a CVE record, but no detailed technical information, exploit, or patch guidance is provided.

    0000018
    75 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-7538 OS Command Injection in Totolink A8000RU 7.1cu.643_b20200521 CGI Handler https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-7538

    Post summary

    The post announces CVE-2026-7538, indicating an OS command injection flaw in a specific Totolink router firmware version, but does not provide exploitation details or mitigations.

    0000045
    4.0K followersView on X

Explore more