VULNERABILITY INTELLIGENCE

CVE-2023-5176

CVSS score9.8 CRITICAL

EPSS probability1.39%

CISA KEVNot currently listed

Published2023-09-27

Last modified2026-06-17

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

Description

Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

Weakness classification

nvd@nist.gov: CWE-787
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-787

Primary references

security@mozilla.org — Broken Link, Issue Tracking, Permissions Required
security@mozilla.org — Mailing List, Third Party Advisory
security@mozilla.org — Mailing List, Third Party Advisory
security@mozilla.org — Third Party Advisory
security@mozilla.org — Third Party Advisory
security@mozilla.org — Vendor Advisory
security@mozilla.org — Vendor Advisory
security@mozilla.org — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Issue Tracking, Permissions Required
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory