VULNERABILITY INTELLIGENCE
CVE-2026-6784
CVSS score7.5 HIGH
EPSS probability0.36%
CISA KEVNot currently listed
Published2026-04-21
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Description
Memory safety bugs present in Firefox 149 and Thunderbird 149. 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 150 and Thunderbird 150.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-125
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-787