CVE-2026-22859 — Out-of-bounds Read in Freerdp

CWE-125 — Out-of-bounds ReadCWE-129 — Improper Validation of Array Index6 documents6 sources
Severity
5.6MEDIUMNVD
EPSS
0.1%
top 75.17%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
FreerdpDebian Freerdp2Debian Freerdp3
Timeline
PublishedJan 14
Latest updateMar 18

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, the URBDRC client does not perform bounds checking on server‑supplied MSUSB_INTERFACE_DESCRIPTOR values and uses them as indices in libusb_udev_complete_msconfig_setup, causing an out‑of‑bounds read. This vulnerability is fixed in 3.20.1.

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

Affected Packages3 packages

▶NVDfreerdp/freerdp< 3.20.1
▶debiandebian/freerdp2< freerdp3 3.20.2+dfsg-1 (forky)
▶debiandebian/freerdp3< freerdp3 3.20.2+dfsg-1 (forky)

🔴Vulnerability Details

1
OSV
CVE-2026-22859: FreeRDP is a free implementation of the Remote Desktop Protocol↗2026-01-14
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📋Vendor Advisories

3
Ubuntu
FreeRDP vulnerabilities↗2026-03-18
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Red Hat
freerdp: FreeRDP heap-buffer-overflow↗2026-01-14
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Debian
CVE-2026-22859: freerdp2 - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-22859 Impact, Exploitability, and Mitigation Steps | Wiz↗
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