CVE-2026-23732

HIGH
2026-01-19 [email protected]
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

4
Patch Released
Apr 09, 2026 - 20:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 28, 2026 - 18:38 vuln.today
Public exploit code
CVE Published
Jan 19, 2026 - 18:16 nvd
HIGH 7.5

Tags

Buffer Overflow Denial Of Service Freerdp Redhat Suse

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, FastGlyph parsing trusts `cbData`/remaining length and never validates against the minimum size implied by `cx/cy`. A malicious server can trigger a client‑side global buffer overflow, causing a crash (DoS). Version 3.21.0 contains a patch for the issue.

Analysis

FreeRDP versions before 3.21.0 contain a buffer overflow in FastGlyph parsing where a malicious Remote Desktop server can crash the client by sending specially crafted glyph data that bypasses length validation. A remote attacker can exploit this vulnerability without authentication to cause denial of service, and public exploit code exists. …

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Remediation

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

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Priority Score

58
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +38
POC: +20

Vendor Status

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CVE-2026-23732 vulnerability details – vuln.today
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