CVE-2026-109714

Incorrect boundary conditions in the Layout component

State: Published
Severity: 5.4 Medium
Published: Oct 13, 2026
Updated: Oct 15, 2026
Reserved: Oct 13, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N	CISA-ADP

Weaknesses

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Affected Products

Product	Versions
FirefoxMozilla	158 and laterNot affected
ThunderbirdMozilla	158 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2069765
https://www.mozilla.org/security/advisories/mfsa2026-106/
https://www.mozilla.org/security/advisories/mfsa2026-109/

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