CVE-2026-33995

| EUVD-2026-17237 MEDIUM
2026-03-30 GitHub_M
5.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

4
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 30, 2026 - 22:15 vuln.today
EUVD ID Assigned
Mar 30, 2026 - 22:15 euvd
EUVD-2026-17237
CVE Published
Mar 30, 2026 - 21:43 nvd
MEDIUM 5.3

Tags

Denial Of Service

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.

Analysis

FreeRDP prior to version 3.24.2 contains a double-free vulnerability in Kerberos authentication handling that crashes FreeRDP clients during NLA connection teardown following failed authentication attempts on systems with Kerberos configured. The vulnerability affects all versions before 3.24.2 across multiple Linux distributions (Debian, Ubuntu) and requires network access but no authentication credentials, presenting a denial-of-service vector against RDP clients in enterprise environments using Kerberos or Kerberos U2U authentication. …

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Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +26
POC: 0

Vendor Status

Ubuntu

Priority: Medium
freerdp
Release Status Version
xenial needs-triage -
bionic needs-triage -
jammy DNE -
noble DNE -
questing DNE -
upstream needs-triage -
freerdp2
Release Status Version
bionic needs-triage -
focal needs-triage -
jammy needs-triage -
noble needs-triage -
questing DNE -
upstream needs-triage -
freerdp3
Release Status Version
jammy DNE -
noble needs-triage -
questing needs-triage -
upstream needs-triage -

Debian

freerdp2
Release Status Fixed Version Urgency
bullseye vulnerable 2.3.0+dfsg1-2+deb11u1 -
bullseye (security) vulnerable 2.3.0+dfsg1-2+deb11u3 -
bookworm vulnerable 2.11.7+dfsg1-6~deb12u1 -
(unstable) fixed (unfixed) -
freerdp3
Release Status Fixed Version Urgency
trixie vulnerable 3.15.0+dfsg-2.1 -
forky, sid fixed 3.24.2+dfsg-1 -
(unstable) fixed 3.24.2+dfsg-1 -

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CVE-2026-33995 vulnerability details – vuln.today
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