VULNERABILITY INTELLIGENCE

CVE-2026-2807

CVSS score9.8 CRITICAL
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-02-24
Last modified2026-07-15
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 147 and Thunderbird 147. 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 was fixed in Firefox 148 and Thunderbird 148.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references