PT-2026-3467 · Freerdp+4 · Freerdp+4

Ehdgks0627 · CVE-2026-23884 · Published 2026-01-01 · Updated 2026-06-11

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.21.0

Description FreeRDP, a free implementation of the Remote Desktop Protocol, contains a flaw where offscreen bitmap deletion results in the gdi->drawing pointer referencing freed memory. This creates a use-after-free condition when related update packets are received. A malicious server can exploit this to cause a client-side use after free, leading to a denial-of-service (DoS) condition and potential heap corruption, which may result in code execution depending on the allocator and heap layout. The gdi->drawing variable is involved in this issue.

Recommendations Update to version 3.21.0 or later.

Exploit

Fix

RCE

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2026:2048

ALSA-2026:2081

ALSA-2026:2222

BDU:2026-00662

CVE-2026-23884

GHSA-CFGJ-VC84-F3PP

MGASA-2026-0086

OESA-2026-1516

OESA-2026-1517

OESA-2026-1518

OESA-2026-1519

OESA-2026-1520

OESA-2026-1521

OPENSUSE-SU-2026:10107-1

OPENSUSE-SU-2026:10459-1

OPENSUSE-SU-2026:20339-1

OPENSUSE-SU-2026:20632-1

RHSA-2026:2048

RHSA-2026:2081

RHSA-2026:2222

RHSA-2026:2714

RHSA-2026:2736

RHSA-2026:2770

RHSA-2026:2824

RHSA-2026:2952

RHSA-2026:3036

RHSA-2026:3037

RHSA-2026:3038

RHSA-2026:3039

RHSA-2026:3041

SUSE-SU-2026:0345-1

SUSE-SU-2026:0656-1

SUSE-SU-2026:0683-1

SUSE-SU-2026:0761-1

SUSE-SU-2026:0762-1

USN-8105-1

Affected Products

Freerdp

Linuxmint

Red Os

Rocky Linux

Ubuntu

References · 245

• 🔥 https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cfgj-vc84-f3pp · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23884.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-24682 · Security Note
• https://access.redhat.com/errata/RHSA-2026:2952 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23531 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-22858 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8105-1 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2026:2081 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23884 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-23884 · Security Note
• https://access.redhat.com/errata/RHSA-2026:2222 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2026-0086 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00662 · Security Note
• https://ubuntu.com/security/CVE-2026-22853 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20339-1 · Vendor Advisory