Mutt · Mutt · CVE-2026-43864
**Name of the Vulnerable Software and Affected Versions**
mutt versions prior to 2.3.2
**Description**
A NULL pointer dereference exists in the `show sig summary` function. A NULL pointer dereference occurs when a program attempts to read or write to a memory location using a pointer that is null, typically leading to a program crash.
**Recommendations**
Update to version 2.3.2 or later.
As a temporary workaround, consider disabling the `show sig summary` function until the update is applied.