CVE-2026-109762

8.8High

Published 13 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash

8.8High

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Impact: Full C/I/A compromise
Weakness: CWE-119

Impact

Remote attackers can achieve code execution or crash the application if a user views malicious SVG content. Exploitation requires user interaction to visit a crafted page or open a malicious message.

Root cause

Improper boundary checking in the SVG rendering component leads to a buffer error.

Affected systems

Firefox before 158, Firefox ESR before 153.5, Thunderbird before 158, and Thunderbird ESR before 153.5.

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Fix & remediation

Upgrade to Firefox 158, Firefox ESR 153.5, Thunderbird 158, or Thunderbird 153.5. No interim mitigation is documented; patching is required.

shell

$ sudo apt-get update && sudo apt-get install --only-upgrade firefox thunderbird

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-109762