CVE-2026-16367

Sandbox escape due to invalid pointer in the Disability Access APIs component

State: Published
Severity: 10.0 Critical
Published: Jul 21, 2026
Updated: Jul 22, 2026
Reserved: Jul 20, 2026

Description

Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Scores

CVSS	Score	Vector	Source
3.1	10.0 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
FirefoxMozilla	153 and laterNot affected
ThunderbirdMozilla	153 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2050627
https://www.mozilla.org/security/advisories/mfsa2026-68/
https://www.mozilla.org/security/advisories/mfsa2026-71/

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