Review reviewHigh

CVE-2026-44420

FreeRDP FreeRDP, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a too-small capabilitySetLength. This can crash the server process (remote DoS) and may be exploitable for code execution because it corrupts heap memory. This vulnerability is fixed in 3.26.0.

CVSS: 8.8
EPSS: 3.67%
CISA KEV: Not listed
Published: 2026.05.30

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability3.67%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: FreeRDP FreeRDP, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6
Affected versions: >= < 3.26.0, < 3.26.0
Fixed versions: 3.26.0

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that FreeRDP FreeRDP, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-122, CWE-131