PT-2026-138075

CVE-2026-123785

·

Published

2026-11-06

·

Updated

2026-11-06

Description by

CVSS 3.1
5.5
Medium
MetricsAV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Fluxbox through 1.3.7 contains an infinite loop vulnerability in Menu::updateMenu() in src/FbTk/Menu.cc that allows attackers to hang the window manager via crafted style geometry values. Attackers can supply a style with an oversized unbounded menu.titleHeight so the column loop never terminates, causing sustained CPU use and denial of service at startup.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-835: Loop with Unreachable Exit Condition (\'Infinite Loop\')
Related identifiers
CVE-2026-123785
Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com