CVE-2026-33995

MEDIUM

FreeRDP: Possible double free in kerberos_AcceptSecurityContext

Title source: cna

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, a double-free vulnerability in kerberos_AcceptSecurityContext() and kerberos_InitializeSecurityContextA() (WinPR, winpr/libwinpr/sspi/Kerberos/kerberos.c) can cause a crash in any FreeRDP clients on systems where Kerberos and/or Kerberos U2U is configured (Samba AD member, or krb5 for NFS). The crash is triggered during NLA connection teardown and requires a failed authentication attempt. This issue has been patched in version 3.24.2.

References (2)

[X_Refsource_Confirm] https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mv25-f4p2-5mxx

[X_Refsource_Misc] https://github.com/FreeRDP/FreeRDP/commit/8078b8af1359055972e4fb2f509f543b69169391

View Writeup ZIP pw:eip

Scores

CVSS v3 5.3

EPSS 0.0009

EPSS Percentile 26.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-415

Status published

Products (2)

freerdp/freerdp < 3.24.2

FreeRDP/FreeRDP < 3.24.2

Published Mar 30, 2026

Tracked Since Mar 31, 2026