Midnight commander (mc) 4.5.55 and earlier allows remote attackers to cause a denial of service by triggering a null dereference.

published 2005-01-22 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-1089

cvss: 5.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 76%
public exploits: 0; none known

Patch / fix

distros 1 links 2

mc Debian 14, Debian 13, Debian 12 1:4.6.0-4.6.1-pre3-1

debian advisories DEBIAN-CVE-2004-1091

debian.org/security/2005/dsa-639 advisory
secunia.com/advisories/13863 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2004-1091 updated 2025-11-21

security flaw

Red Hat Enterprise Linux WS version 2.1 Red Hat Linux Advanced Workstation 2.1
fixed: vendor fix RHSA-2005:512

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.67% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

References

debian.org /security/2005/dsa-639
vendor-advisory, patch
secunia.com /advisories/13863
third-party-advisory, patch, vendor-advisory
redhat.com /support/errata/RHSA-2005-512.html
vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/18908
vdb-entry

Sources

CVE List CVE-2004-1091
NVD CVE-2004-1091

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Fix old broken CPEs.

Summary