HOMEVULNERABILITIESCVE-2026-33995
MEDIUM

CVE-2026-33995

CWE-415Published: March 30, 2026· Updated: Apr 1, 2026

5.3
CVSS v3.1
EPSS:0.06%probability of exploitation in 30 daysPercentile:17.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-33995 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Vendors & Products

FreeRDP1 product
freerdp
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/FreeRDP/FreeRDP/commit/8078b8af1359055972e4fb2f509f543b69169391
PATCHhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mv25-f4p2-5mxx

All References (2)

→
https://github.com/FreeRDP/FreeRDP/commit/8078b8af1359055972e4fb2f509f543b69169391Patch
→
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mv25-f4p2-5mxxPatch · Vendor Advisory

Quick Facts

CVE IDCVE-2026-33995
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-415
CISA KEVNo
EPSS (30d)0.06%
Affected1 vendor
PublishedMar 30, 2026

Related CVEs (CWE-415)

CVE-2020-37239
9.8
CVE-2026-33824
9.8
CVE-2026-12043
8.8
CVE-2026-44422
8.8
CVE-2026-23918
8.8
CVE-2026-32069
7.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33995 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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