FreeRDP up to 3.31.x libfreerdp/utils/http.c freerdp_http_request certificate validation

Summaryinfo

A vulnerability classified as problematic has been found in FreeRDP up to 3.31.x. This issue affects the function freerdp_http_request of the file libfreerdp/utils/http.c. Performing a manipulation results in certificate validation. This vulnerability was named CVE-2026-109245. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in FreeRDP up to 3.31.x. It has been classified as problematic. This affects the function freerdp_http_request of the file libfreerdp/utils/http.c. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-109245 since 10/12/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

Upgrading to version 3.32.0 eliminates this vulnerability.

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Productinfo

Type

• Remote Access Software

Name

• FreeRDP

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29
• 3.30
• 3.31

License

• open-source

Website

• Product: https://github.com/FreeRDP/FreeRDP/

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