mutt before 2.3.2 has a show_sig_summary NULL pointer dereference.

Description

mutt before 2.3.2 has a show_sig_summary NULL pointer dereference.

Basic information

Type
unreviewed
Severity
low
Advisory on GitHub
Open advisory ↗
Repository advisory
Source code
Not specified
Published (advisory)
2026-05-04 09:31:09 UTC
Updated
2026-05-04 09:31:15 UTC
NVD published
2026-05-04 07:16:01 UTC

EPSS Score

Score Percentile
0.01% 2.29%

CVSS Scores

Base score Version Severity Vector
2.5 3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.

Identifiers

CWEs

CWE id Name
CWE-476 NULL Pointer Dereference

References

cvelogic Threat Intelligence