Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

CVE-2026-109245FreeRDP 3.0.0 before 3.32.0 Improper Certificate Validation in freerdp_http_request

Medium 6.8

In plain English

A medium-severity improper certificate validation in FreeRDP from FreeRDP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.8Medium

Exploit odds (30 days)0.2%top 85.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

FreeRDP 3.0.0 before 3.32.0 contains an improper certificate validation vulnerability in freerdp_http_request() in libfreerdp/utils/http.c that completes TLS handshakes without verifying the server certificate chain. On-path attackers can impersonate login.microsoftonline.com in the Azure AD authentication flow to capture OAuth authorization codes and substitute the OpenID discovery document.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	freerdp2	no fix listed	DEBIAN-CVE-2026-109245
Debian:13	freerdp3	no fix listed	DEBIAN-CVE-2026-109245
Debian:14	freerdp3	3.32.0+dfsg-1	DEBIAN-CVE-2026-109245
Ubuntu:22.04:LTS	freerdp2	no fix listed	UBUNTU-CVE-2026-109245
Ubuntu:24.04:LTS	freerdp3	3.32.0+dfsg-0ubuntu0.24.04.1	UBUNTU-CVE-2026-109245
Ubuntu:26.04:LTS	freerdp3	3.32.0+dfsg-0ubuntu0.26.04.1	UBUNTU-CVE-2026-109245

Affected products (as reported)

Vendor	Product	Versions
FreeRDP	FreeRDP	3.0.0 – before 3.32.0

Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-h44v-39x6-9xvg) vendor-advisory
VulnCheck Advisory: FreeRDP 3.0.0 before 3.32.0 Improper Certificate Validation in freerdp_http_request third-party-advisory