CVE-2004-0400 json
Stack-based buffer overflow in Exim 4 before 4.33, when the headers_check_syntax option is enabled, allows remote attackers to cause a deni…
published 2004-05-12 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0400
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.0%
- EPSS 7.0% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
Stack-based buffer overflow in Exim 4 before 4.33, when the headers_check_syntax option is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code during the header check.
Patch / fix
- exim4 Debian 14, Debian 13, Debian 12 4.33-1
debian advisories DEBIAN-CVE-2004-0400
- debian.org/security/2004/dsa-502 advisory
- debian.org/security/2004/dsa-501 advisory
- guninski.com/exim1.html advisory
Exploit prediction
6.97% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- guninski.com http://www.guninski.com/exim1.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
debian.org
/security/2004/dsa-502
vendor-advisory, patch
-
debian.org
/security/2004/dsa-501
vendor-advisory, patch
-
guninski.com
/exim1.html
exploit, patch, vendor-advisory
-
lists.grok.org.uk
/pipermail/full-disclosure/2004-May/021015.html
mailing-list
-
exchange.xforce.ibmcloud.com
/vulnerabilities/16077
vdb-entry
Sources
- CVE List CVE-2004-0400
- NVD CVE-2004-0400
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.