CVE-2004-0399

Exim < 4 - Stack-based Buffer Overflow via Sender Verification

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2004-0399. PoCs published by newroot.

AI-analyzed exploit summary This exploit targets a stack-based buffer overflow in Exim 3.35 when sender verification is enabled. It crafts a malicious email payload to overwrite the return address and execute a bindshell on port 8658.

Description

Stack-based buffer overflow in Exim 3.35, and other versions before 4, when the sender_verify option is true, allows remote attackers to cause a denial of service and possibly execute arbitrary code during sender verification.

Exploits (1)

exploitdb WORKING POC VERIFIED
by newroot · cremotelinux
https://www.exploit-db.com/exploits/24093

This exploit targets a stack-based buffer overflow in Exim 3.35 when sender verification is enabled. It crafts a malicious email payload to overwrite the return address and execute a bindshell on port 8658.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Exim 3.35
No auth needed
Prerequisites: Sender verification enabled in Exim · Network access to SMTP port (25)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Patch, Vendor Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2004/dsa-502
Patch, Vendor Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2004/dsa-501
Mailing List mailing-list x_refsource_fulldisc
http://lists.grok.org.uk/pipermail/full-disclosure/2004-May/021015.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/11558
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/16079
Exploit, Patch, Vendor Advisory x_refsource_misc
http://www.guninski.com/exim1.html

Scores

EPSS 0.2051
EPSS Percentile 97.2%

Details

Status published
Products (2)
university_of_cambridge/exim
university_of_cambridge/exim 3.35
Published Jul 07, 2004
Tracked Since Feb 18, 2026