What is CVE-2026-92014?

CVE-2026-92014 is a high-severity vulnerability, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-09-15.

How severe is CVE-2026-92014?

High severity. CVSS v3 base score is 8.8 out of 10.

CVE-2026-92014

CVE-2026-92014

Privilege escalation due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox ESR 115.41, Firefox ESR 140.16, and Thunderbird 140.16.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

security@mozilla.org
security@mozilla.org
security@mozilla.org
security@mozilla.org

Frequently asked questions

What is CVE-2026-92014?: CVE-2026-92014 is a high-severity vulnerability, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-09-15.
How severe is CVE-2026-92014?: High severity. CVSS v3 base score is 8.8 out of 10.