What’s Vulnerable › Vulnerabilities

CVE-2022-39320: Heap buffer overflow in urbdrc channel

• Severity: medium (CVSS 4.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-11-16 · updated 2026-06-17
• Weakness: CWE-125

Description

FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP may attempt integer addition on too narrow types leads to allocation of a buffer too small holding the data written. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the `/usb` redirection switch.

Affected products

• Fedoraproject Fedora: 36, 37
• FreeRDP: before 2.9.0 — fixed in 2.9.0

How to fix

Upgrade to a fixed version: FreeRDP 2.9.0. Check the vendor advisory for mitigations.

References

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qfq2-82qr-7f4j
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UDOTAOJBCZKREZJPT6VZ25GESI5T6RBG/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGQN3OWQNHSMWKOF4D35PF5ASKNLC74B/
• https://security.gentoo.org/glsa/202401-16
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qfq2-82qr-7f4j
• https://lists.debian.org/debian-lts-announce/2025/02/msg00034.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UDOTAOJBCZKREZJPT6VZ25GESI5T6RBG/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGQN3OWQNHSMWKOF4D35PF5ASKNLC74B/
• https://security.gentoo.org/glsa/202401-16

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