CVE-2026-43864
mutt: mutt before 2.3.2 has a show_sig_summary NULL pointer dereference.
CVE-2026-43864 is fixed in mutt on 1 platform, first by DEBIAN-CVE-2026-43864, released May 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
2.5
low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0010
0th percentile
mutt before 2.3.2 has a show_sig_summary NULL pointer dereference.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| mutt · Debian 13.5 (trixie) | 2.2.13-1+deb13u1 | DEBIAN-CVE-2026-43864 | May 4, 2026 |
| mutt · Debian 14 | 2.3.2-1 | DEBIAN-CVE-2026-43864 | May 4, 2026 |
| mutt · opensuse-leap 16.0 | 2.2.16-160000.2.1 | OPENSUSE-SU-2026:21016-1 | Jun 22, 2026 |
| mutt · sles 16.0 | 2.2.16-160000.2.1 | SUSE-SU-2026:22340-1 | Jun 22, 2026 |
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