What is CVE-2026-33995?

CVE-2026-33995 is a medium-severity vulnerability in Freerdp, classified under Double Free. CVSS score: 5.3/10. Published 2026-03-30.

How severe is CVE-2026-33995?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Double Free in Freerdp

CVE-2026-33995

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.

Vulnerability class: Double Free

EPSS: 0.003 (20.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Freerdp — versions < 3.24.2

Weakness classification (CWE)

CWE-415 — Double Free

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33995?: CVE-2026-33995 is a medium-severity vulnerability in Freerdp, classified under Double Free. CVSS score: 5.3/10. Published 2026-03-30.
How severe is CVE-2026-33995?: Medium severity. CVSS v3 base score is 5.3 out of 10.