{
  "cvss": 0.0,
  "datePublished": "2026-10-27",
  "dateUpdated": "2026-10-27",
  "description": "Google Brotli Unchecked Return Value Vulnerability | Affected: Google / Brotli | 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. | Required action: 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. | Due date: 2026-11-10 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/google/brotli/releases/tag/v1.2.1 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-111497",
  "dueDate": "2026-11-10",
  "exploited": true,
  "id": "CVE-2026-111497",
  "kev_catalogs": [
    "circl"
  ],
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Brotli",
  "severity": "HIGH",
  "source": "circl_kev",
  "title": "Google Brotli Unchecked Return Value Vulnerability",
  "vendor": "Google"
}