CVE-2023-40181

Integer-Underflow leading to Out-Of-Bound Read in FreeRDP

Published Aug 31, 2023 CVSS 3.1 · 5.3 Medium EPSS 1.7% KEV · Not listed
Description
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Integer-Underflow leading to Out-Of-Bound Read in the `zgfx_decompress_segment` function. In the context of `CopyMemory`, it's possible to read data beyond the transmitted packet range and likely cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3606-1 freerdp2 security update
Debian DLA Debian DLA DLA-4053-1 freerdp2 security update
EUVD EUVD EUVD-2023-44781 FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Integer-Underflow leading to Out-Of-Bound Read in the `zgfx_decompress_segment` function. In the context of `CopyMemory`, it's possible to read data beyond the transmitted packet range and likely cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.
Ubuntu USN Ubuntu USN USN-6401-1 FreeRDP vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.0008}

epss

{'score': 0.00074}

Type Values Removed Values Added
Metrics epss

{'score': 0.00112}

epss

{'score': 0.0008}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Nov 3, 2025, 8:35 PM
Reserved
Aug 9, 2023, 3:26 PM
Status
Modified
Published
Aug 31, 2023, 10:15 PM
Modified
Jun 17, 2026, 6:16 AM
Severity
Low
Public date
Sep 1, 2023, 12:00 AM