CVE-2026-109753

Published: Oct 13, 2026Modified: Oct 15, 2026Deferred

8.1

Vector

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

Exploitability: 2.8 / Impact: 5.2

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

Incorrect boundary conditions in the Layout component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Related CWEs

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (6)

https://bugzilla.mozilla.org/show_bug.cgi?id=2068441

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-106/

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-107/

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-108/

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-109/

Source: security@mozilla.org

https://www.mozilla.org/security/advisories/mfsa2026-110/

Source: security@mozilla.org

Timeline

No history available yet.