EIP-2026-102796
PRE-CVECalibre E-Book Reader - Local Privilege Escalation (3)
Title source: legacyExploitation Summary
EIP tracks 1 public exploit for EIP-2026-102796. PoCs published by zx2c4.
AI-analyzed exploit summary This exploit leverages a race condition in the calibre-mount-helper to mount a crafted overlay filesystem over /etc/pam.d, modifying PAM configuration files to bypass authentication. It uses a combination of symlink manipulation and inotify to achieve privilege escalation.
Description
Calibre E-Book Reader - Local Privilege Escalation (3)
Exploits (1)
exploitdb
WORKING POC
VERIFIED
by zx2c4 · clocallinux
https://www.exploit-db.com/exploits/18086
This exploit leverages a race condition in the calibre-mount-helper to mount a crafted overlay filesystem over /etc/pam.d, modifying PAM configuration files to bypass authentication. It uses a combination of symlink manipulation and inotify to achieve privilege escalation.
Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Racy
Target:
calibre-mount-helper (version not specified)
No auth needed
Prerequisites:
Presence of calibre-mount-helper · Write access to /dev/shm · Ability to execute system commands
devstral-2 · analyzed Feb 18, 2026
Full analysis →
Details
Status
pre_cve
Tracked Since
Feb 18, 2026