8.3

CVE-2026-73241: freerdp Improper Authentication

CVSS: 8.3v4.0HighAnalyzed
AliasesUBUNTU-CVE-2026-73241DEBIAN-CVE-2026-73241
Published 11-08-2026Last modified 13-08-2026
Open JSON

Vulnerability summary

CVE-2026-73241 is a high (CVSS 8.3) Improper Authentication vulnerability in freerdp. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
43/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v4.0 (CVE.org)
EPSS score
0.47%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2 · Duplicates 1
RHSA-2026:61378RHSA-2026:68706CVE-2026-72746

Timeline

  1. 11-08-2026
    PublishedVulnerability first disclosed.
  2. 13-08-2026
    Last modifiedVulnerability information updated.

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP server-side RDSTLS in libfreerdp/core/rdstls.c accepts an attacker-supplied RDSTLS_TYPE_CAPABILITIES PDU while rdstls_server_authenticate is waiting for RDSTLS_TYPE_AUTHREQ, leaving resultCode at RDSTLS_RESULT_SUCCESS and allowing a remote unauthenticated client to bypass the RedirectionGuid, username, domain, or password checks. This issue is fixed in version 3.30.0.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

0.47%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

+0.09 pp

From 0.38% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.47%

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< 3.30.0+dfsg-0ubuntu0.24.04.1 | < 3.30.0+dfsg-0ubuntu0.26.04.1
Debian2 products
  • freerdp2All versions (No fix recorded)
  • freerdp3All versions (No fix recorded) | < 3.30.0+dfsg-1
Freerdp1 product

3 vendors · 6 products

References

7 links