6.5

CVE-2026-27015: freerdp Reachable Assertion

CVSS: 6.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-27015DEBIAN-CVE-2026-27015
Published 25-02-2026Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2026-27015 is a medium (CVSS 6.5) Reachable Assertion vulnerability in freerdp. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 34% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.41%
0%100%
Low · +0.16 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
MGASA-2026-0383OPENSUSE-SU-2026:10611-1USN-8105-1

Timeline

  1. 25-02-2026
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a missing bounds check in `smartcard_unpack_read_size_align()` (`libfreerdp/utils/smartcard_pack.c:1703`) allows a malicious RDP server to crash the FreeRDP client via a reachable `WINPR_ASSERT` → `abort()`. The crash occurs in upstream builds where `WITH_VERBOSE_WINPR_ASSERT=ON` (default in FreeRDP 3.22.0 / current WinPR CMake defaults). Smartcard redirection must be explicitly enabled by the user (e.g., `xfreerdp /smartcard`; `/smartcard-logon` implies `/smartcard`). Version 3.23.0 fixes the issue.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

+0.16 pp

From 0.26% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.41%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Freerdp

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Ubuntu3 products
  • freerdpAll versions (No fix recorded)
  • freerdp2All versions (No fix recorded)
  • freerdp3< 3.5.1+dfsg1-0ubuntu1.4 | < 3.16.0+dfsg-2ubuntu0.3
Debian2 products
  • freerdp2All versions (No fix recorded)
  • freerdp3< 3.15.0+dfsg-2.1+deb13u1 | < 3.23.0+dfsg-1
Freerdp1 product

3 vendors · 6 products

References

6 links