CVE-2026-84641

high Red Hat
CVSS v3 Base Score
8.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
Low
Availability
High
Published: September 1, 2026 (4 days ago)
Last Modified: September 1, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in Thunderbird. A remote attacker, by operating a malicious Internet Message Access Protocol (IMAP) server, could send a specially crafted ID response. This could trigger a use-after-free vulnerability and lead to heap-memory disclosure, allowing sensitive heap contents to be persisted to the prefs.js file.

CWE

CWE-825

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 bugzilla.mozilla.org 🔗 www.mozilla.org