ZeroDay Findings
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-27950

FreeRDP is a free implementation of the Remote Desktop Protocol.

Published Feb 25, 2026 · catalog updated Jun 17, 2026 · freerdp freerdp

Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.8%
Remediation
Advisory link
Affected products
cpe freerdp/freerdp

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a situation where the advisory suggests the vulnerability is fully resolved, while builds or environments still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.

Technical analysis

Mechanism and impact are interpreted from ingested advisories — not independent exploit research.

  • CWE classification

    Use After Free

  • Prerequisites and impact

    Follow the original vendor advisory for access prerequisites and impact. This catalog does not invent exploit conditions.

How to fix CVE-2026-27950

What to do

Three reads of the same public record: the decision, the versions on file, and the signals. Confirm the vendor advisory before you patch. This page does not publish exploit steps.

Executive

This is a public record, not a confirmed incident. CVE-2026-27950 is a medium issue in freerdp freerdp (CVSS 5.5). CISA does not currently list it as known exploited. Next step: Compare installed versions with the linked vendor advisory before changing production.

System administrator

Check whether freerdp freerdp is installed. Ranges on record: freerdp/freerdp. Compare installed versions with the linked vendor advisory before changing production.

Security analyst

CVSS 5.5. EPSS 0.8%. CISA does not currently list it as known exploited. Weaknesses: CWE-416. Sources: cve_org, epss, nvd. Exploit links, when listed below, point at the original publisher.

Related intelligence

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 25, 2026 · NIST NVD

    Detected

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. Th

  2. Jun 17, 2026 · NIST NVD

    Updated

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. Th

Affected versions

Enter an installed version to get a verified affected / not-affected result against the ranges below.

  • cpe freerdp/freerdpversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-27950

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-27950

    30-day exploitation probability 0.8%

    first.org
  • NIST NVDVulnerability recordCVE-2026-27950

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appea

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.