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Vulnerability record · CVE-2026-92061 · published 15 September 2026

CVE-2026-92061: Memory buffer overflow vulnerability

Incorrect boundary conditions in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

9.8 CVSS 3.1 Critical EPSS 0.59% · top 54.1% CWE-119 · Memory buffer overflow Awaiting Analysis
9.8CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
21 Sep 2026Last modified by NVD

Description

Incorrect boundary conditions in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

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

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=2041758
https://www.mozilla.org/security/advisories/mfsa2026-90/
https://www.mozilla.org/security/advisories/mfsa2026-94/

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Source: NIST National Vulnerability Database (record CVE-2026-92061), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.