What’s Vulnerable › Vulnerabilities

CVE-2022-24883: FreeRDP Server authentication might allow invalid credentials to pass

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-26 · updated 2026-06-17
• Weakness: CWE-287

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP). Prior to version 2.7.0, server side authentication against a `SAM` file might be successful for invalid credentials if the server has configured an invalid `SAM` file path. FreeRDP based clients are not affected. RDP server implementations using FreeRDP to authenticate against a `SAM` file are affected. Version 2.7.0 contains a fix for this issue. As a workaround, use custom authentication via `HashCallback` and/or ensure the `SAM` database path configured is valid and the application has file handles left.

Affected products

• Fedoraproject Fedora: 34, 35, 36
• FreeRDP: before 2.7.0 — fixed in 2.7.0

How to fix

Upgrade to a fixed version: FreeRDP 2.7.0. Check the vendor advisory for mitigations.

References

• https://github.com/FreeRDP/FreeRDP/commit/4661492e5a617199457c8074bad22f766a116cdc
• https://github.com/FreeRDP/FreeRDP/commit/6f473b273a4b6f0cb6aca32b95e22fd0de88e144
• https://github.com/FreeRDP/FreeRDP/releases/tag/2.7.0
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qxm3-v2r6-vmwf
• https://lists.debian.org/debian-lts-announce/2023/11/msg00010.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AELSWWBAM2YONRPGLWVDY6UNTLJERJYL/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DOYKBQOHSRM7JQYUIYUWFOXI2JZ2J5RD/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZWR6KSIKXO4B2TXBB3WH6YTNYHN46OY/
• https://security.gentoo.org/glsa/202210-24
• https://github.com/FreeRDP/FreeRDP/commit/4661492e5a617199457c8074bad22f766a116cdc
• https://github.com/FreeRDP/FreeRDP/commit/6f473b273a4b6f0cb6aca32b95e22fd0de88e144
• https://github.com/FreeRDP/FreeRDP/releases/tag/2.7.0

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