CVE-2026-92076

HighCVSS 8.8/10Last modified Oct 5, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-119

Affected software

Vendor	Product	Versions
Mozilla	Firefox	—
Mozilla	Thunderbird	—

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2064026Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-90/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-93/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-94/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-96/Vendor Advisory

Timeline

Published: Sep 15, 2026
Last modified: Oct 5, 2026
NVD status: Analyzed

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