CVE-2026-91142

LOWCVSS 3.6

A flaw was found in Cockpit. An integer overflow vulnerability in the `do_lastlog()` function, specifically in the offset calculation for `lastlog` entries on ILP32 (Integer, Long, Pointer 32-bit) builds, can be exploited. A low-privileged authenticated user with a specially provisioned large User ID (UID) can cause the computed offset to wrap around. This allows the user to perform unauthorized reads and writes to other users' `lastlog` records, potentially disclosing or altering sensitive login accounting information.

Published 2026-09-18 · last modified 2026-09-18

Full record at NVD ↗

← Get alerted the moment a CVE hits your gear — subscribe free

Ncerio by BeyondNets · data from NVD, CISA KEV, EPSS.