SEPTEMBER 17, 2026
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Case File

CVE-2026-91960

MEDIUM · CVSS 6.5 EPSS 0.44% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

FreeRDP versions prior to 3.31.0 are vulnerable to an integer overflow in the Stream_EnsureRemainingCapacity function, which can be exploited by remote attackers to induce a denial of service. By sending a specially crafted WebSocket Ping frame, an attacker can trigger a double free condition, leading to crashes of the FreeRDP client during connection attempts. Organizations using FreeRDP should prioritize updating to the latest version to mitigate this risk.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2026-91960
Severity
MEDIUM
CVSS
6.5
EPSS
0.44%

Original NVD Description

FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's Stream_EnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame with a crafted 64-bit extended payload length to trigger integer wraparound, resulting in a double free that crashes the FreeRDP client during connection.