EIP-2026-102830

PRE-CVE

Eric Allman Sendmail 8.8.x - Socket Hijack

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-102830. PoCs published by Michal Zalewski.

AI-analyzed exploit summary This exploit leverages a combination of vulnerabilities in sendmail to hijack the file descriptor for the privileged port 25. It involves a half-open TCP scan to make sendmail sleep, starting sendmail with a modified argv[0], and sending a HUP signal to execute arbitrary code with the inherited socket descriptor.

Description

Eric Allman Sendmail 8.8.x - Socket Hijack

Exploits (1)

exploitdb WORKING POC VERIFIED
by Michal Zalewski · clocallinux
https://www.exploit-db.com/exploits/19602

This exploit leverages a combination of vulnerabilities in sendmail to hijack the file descriptor for the privileged port 25. It involves a half-open TCP scan to make sendmail sleep, starting sendmail with a modified argv[0], and sending a HUP signal to execute arbitrary code with the inherited socket descriptor.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Moderate
Reliability
Racy
Target: sendmail (version not specified)
No auth needed
Prerequisites: Local access to the target machine · Ability to send TCP packets to port 25 · Presence of sendmail with vulnerable configuration
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026