CVE-2026-33995 — Double Free in Freerdp

CWE-415 — Double FreeCWE-825 — Expired Pointer Dereference25 documents6 sources
Severity
5.3MEDIUMNVD
EPSS
0.1%
top 78.04%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Freerdp
Timeline
PublishedMar 30

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 bee…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LExploitability: 3.9 | Impact: 1.4

Affected Packages2 packages

▶CVEListV5freerdp/freerdp< 3.24.2
▶NVDfreerdp/freerdp< 3.24.2

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
OSV
CVE-2026-33995: FreeRDP is a free implementation of the Remote Desktop Protocol↗2026-03-30
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CVEList
FreeRDP: Possible double free in kerberos_AcceptSecurityContext↗2026-03-30
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📋Vendor Advisories

2
Red Hat
FreeRDP: FreeRDP: Denial of Service via double-free vulnerability during NLA connection teardown↗2026-03-30
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Debian
CVE-2026-33995: freerdp2 - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to versio...↗2026
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🕵️Threat Intelligence

20
Wiz
CVE-2026-26514 Impact, Exploitability, and Mitigation Steps | Wiz↗
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Wiz
CVE-2025-63658 Impact, Exploitability, and Mitigation Steps | Wiz↗
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Wiz
CVE-2025-63651 Impact, Exploitability, and Mitigation Steps | Wiz↗
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Wiz
CVE-2025-65203 Impact, Exploitability, and Mitigation Steps | Wiz↗
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Wiz
CVE-2025-63649 Impact, Exploitability, and Mitigation Steps | Wiz↗
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