CVE-2026-25997CWE-416

FreeRDP has heap-use-after-free in xf_clipboard_format_equal

Medium · published February 25, 2026

CVSS v4.0
5.5
EPSS
1%
Percentile
62.7
In the wild
Unconfirmed
What it is

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_clipboard_format_equal` reads freed `lastSentFormats` memory because `xf_clipboard_formats_free` (called from the cliprdr channel thread during auto-reconnect) frees the array while the X11 event thread concurrently iterates it in `xf_clipboard_changed`, triggering a heap use after free. Version 3.23.0 fixes the issue.

The record
Technical detail
CVSS v4.0
5.5 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.01008 · 62.7th percentile
Weakness
CWE-416 · Use After Free
Published
2026-02-25T20:38Z
EPSS history
Timeline
  • 25 FEB 20:38Z
    FreeRDP has heap-use-after-free in xf_clipboard_format_equal
    cvelistv5