EIP-2026-114765

PRE-CVE

Emacs - movemail Privilege Escalation (Metasploit)

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-114765. PoCs published by Metasploit.

AI-analyzed exploit summary This Metasploit module exploits a SUID-root installation of the Emacs movemail utility to escalate privileges by writing to /usr/lib/crontab.local, a technique documented in historical contexts like The Cuckoo's Egg. It checks for 4.3BSD systems, verifies SUID permissions, and crafts a crontab entry to execute arbitrary commands as root.

Description

Emacs - movemail Privilege Escalation (Metasploit)

Exploits (1)

exploitdb WORKING POC VERIFIED
by Metasploit · rubylocalunix
https://www.exploit-db.com/exploits/45953

This Metasploit module exploits a SUID-root installation of the Emacs movemail utility to escalate privileges by writing to /usr/lib/crontab.local, a technique documented in historical contexts like The Cuckoo's Egg. It checks for 4.3BSD systems, verifies SUID permissions, and crafts a crontab entry to execute arbitrary commands as root.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: Emacs movemail (4.3BSD)
No auth needed
Prerequisites: SUID-root movemail binary · 4.3BSD system · Access to execute movemail
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026