AUGUST 4, 2026
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Case File

CVE-2026-23883

CRITICAL · CVSS 9.8 EPSS 0.40% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-01-19 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-23883
Severity
CRITICAL
CVSS
9.8
EPSS
0.40%

Original NVD Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, `xf_Pointer_New` frees `cursorPixels` on failure, then `pointer_free` calls `xf_Pointer_Free` and frees it again, triggering ASan UAF. A malicious server can trigger a client‑side use after free, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.

Related CVEs

Other vulnerabilities affecting the same vendor(s)