CVE-2026-43864

medium Red Hat
CVSS v3 Base Score
4.7
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 97% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Published: May 4, 2026 (67 days ago)
Last Modified: May 4, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in mutt. This vulnerability, a null pointer dereference in the `show_sig_summary` function, could allow an attacker to cause a denial of service. This occurs when processing specially crafted input related to signature summaries.

CWE

CWE-476

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

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