5.3

CVE-2026-33995: freerdp Double Free

CVSS: 5.3v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-33995DEBIAN-CVE-2026-33995
Published 30-03-2026Last modified 02-04-2026
Open JSON

Vulnerability summary

CVE-2026-33995 is a medium (CVSS 5.3) Double Free vulnerability in freerdp. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.49%
0%100%
Low · +0.21 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 5
MGASA-2026-0383OPENSUSE-SU-2026:10633-1OPENSUSE-SU-2026:21116-1SUSE-SU-2026:22194-1SUSE-SU-2026:3562-1USN-8561-1

Timeline

  1. 30-03-2026
    PublishedVulnerability first disclosed.
  2. 02-04-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

+0.21 pp

From 0.28% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.49%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu3 products
  • freerdpAll versions (No fix recorded)
  • freerdp2All versions (No fix recorded)
  • freerdp3< 3.30.0+dfsg-0ubuntu0.24.04.1 | All versions (No fix recorded)
Debian2 products
  • freerdp2All versions (No fix recorded)
  • freerdp3< 3.15.0+dfsg-2.1+deb13u2 | < 3.24.2+dfsg-1
Freerdp1 product

3 vendors · 6 products

References

6 links