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CVE-2026-111497 Critique

Google Brotli Unchecked Return Value Vulnerability.

Google · Brotli

Exploitabilité (EPSS)
55.5 %
percentile mondial 99
Sévérité (CVSS)
9.2
CVSS v4.0
Ajoutée au KEV
27 oct. 2026
échéance CISA · 10 nov. 2026
Description

Google Brotli contains an unchecked return value vulnerability that allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream.

Action requise (CISA)

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.

Familles de faiblesses
CWE-252 · CWE-252 CWE-787 · Écriture hors limites
Signal de priorisation (d’inspiration SSVC)
Agir en priorité
Exploitation
Active (catalogue KEV)
Automatisable
Oui
Impact technique
Total

Une orientation, pas une décision : le 4ᵉ facteur SSVC (impact mission/société) dépend du contexte de votre organisation. Méthode ↗

Suivi CERT-FR (ANSSI)
Vulnérabilité dans les produits Palo Alto Networks (27 octobre 2026) CERTFR-2026-AVI-1396 Multiples vulnérabilités dans Microsoft .Net (26 octobre 2026) CERTFR-2026-AVI-1382 Vulnérabilité dans les produits Microsoft (26 octobre 2026) CERTFR-2026-AVI-1383
Mentions dans la veille (6)
🚨 CVE-2026-111497A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on al... @cveNotify 🚨 CVE-2026-111497A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on al... @cveNotify PHP Issues Second Windows Security Update in Five Days to Fix Brotli Code Execution Flaw The Hacker News 🚨 CVE-2026-111497A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on al... @cveNotify 🚨 CVE-2026-111497A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on al... @cveNotify
Autres vulnérabilités exploitées · Google
CVE-2023-4863 100% CVE-2018-17463 85% CVE-2021-21224 84% CVE-2020-6418 79% CVE-2021-21220 70% CVE-2021-30551 65%
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