CVE-2026-92076

Published: Sep 15, 2026Modified: Oct 5, 2026

8.8

Vector

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

Exploitability: 2.0 / Impact: 6.0

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

Description

Incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Affected (4)

Products: Mozilla: Firefox, Thunderbird

Mozilla

2 products

Firefox

Thunderbird

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Before 153.3.0
Mozilla Firefox	From 154.0.0 to 156.0.0
Mozilla Thunderbird	Before 153.3.0
Mozilla Thunderbird	From 154.0 to 156.0

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 (5)

https://bugzilla.mozilla.org/show_bug.cgi?id=2064026

Source: security@mozilla.org

Permissions Required

https://www.mozilla.org/security/advisories/mfsa2026-90/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2026-93/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2026-94/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2026-96/

Source: security@mozilla.org

Vendor Advisory

Timeline

No history available yet.