CVE-2026-109712
highSandbox escape due to uninitialized memory in the Graphics component.
Sandbox escape due to uninitialized memory in the Graphics component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
CVSS
7.1
7.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2026-10-13 13:17
Modified: 2026-10-16 19:17
NVD status: Deferred
Last synced 2 days ago
Verified against the source API 2026-10-27 06:59 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2068420 security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-106/ security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-107/ security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-108/ security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-109/ security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-110/ security@mozilla.org
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:59 UTC · record ↗