CVE-2026-43859
mutt: mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP auth_cram MD5 digest.
CVE-2026-43859 is fixed in mutt on 1 platform, first by DEBIAN-CVE-2026-43859, released May 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
3.7
low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0016
5th percentile
mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP auth_cram MD5 digest.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| mutt · Debian 13.5 (trixie) | 2.2.13-1+deb13u1 | DEBIAN-CVE-2026-43859 | May 4, 2026 |
| mutt · Debian 14 | 2.3.2-1 | DEBIAN-CVE-2026-43859 | 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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