Linuxsecurity

Buffer Overflow Vulnerability in FreeRDP Affects Multiple Ubuntu Releases

First seen 4 Feb 2026, 09:29 UTC • Ubuntu

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A buffer overflow vulnerability has been identified in FreeRDP, affecting Ubuntu 24.04 LTS and its derivatives. Discovered by Kim Dong Han, the flaw arises from improper validation of variable sizes, potentially allowing attackers to execute arbitrary code or cause a denial of service. Several CVEs have been associated with this issue, all published on January 19, 2026.

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Attack Flow

9 entities, 16 inferred relationships (STIX 2.1).

Organization (1)

Ubuntu

Vulnerability (5)

CVE-2026-23530
CVE-2026-23531
CVE-2026-23532
CVE-2026-23533
CVE-2026-23534

Affected Platform (3)

FreeRDP
Libfreerdp2
Windows

Relationships

CVE-2026-23530 targets FreeRDP
CVE-2026-23530 targets Libfreerdp2
CVE-2026-23530 targets Windows
CVE-2026-23531 targets FreeRDP
CVE-2026-23531 targets Libfreerdp2
CVE-2026-23531 targets Windows
CVE-2026-23532 targets FreeRDP
CVE-2026-23532 targets Libfreerdp2
CVE-2026-23532 targets Windows
CVE-2026-23533 targets FreeRDP
CVE-2026-23533 targets Libfreerdp2
CVE-2026-23533 targets Windows
CVE-2026-23534 targets FreeRDP
CVE-2026-23534 targets Libfreerdp2
CVE-2026-23534 targets Windows
CVE-2026-23530 related to Ubuntu

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Tracked Entities in This Story

Ubuntu FreeRDP Libfreerdp2 Windows

Buffer Overflow Vulnerability in FreeRDP Affects Multiple Ubuntu Releases

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