PT-2026-7125 · Freerdp+3 · Freerdp+3

Keryer · Published 2026-01-01 · Updated 2026-04-07 · CVE-2026-23948

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.22.0

Description FreeRDP, a free implementation of the Remote Desktop Protocol, contains a flaw. A NULL pointer dereference exists in the rdp write logon info v2() function. A malicious RDP server can exploit this by sending a specially crafted LogonInfoV2 Protocol Data Unit (PDU) where cbDomain or cbUserName is set to 0, potentially causing a FreeRDP proxy to crash.

Recommendations Update to version 3.22.0 or later.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2026:6340

ALSA-2026:6799

ALSA-2026:6918

CVE-2026-23948

GHSA-6F3C-QVQQ-2PX5

MGASA-2026-0046

OPENSUSE-SU-2026:10132-1

OPENSUSE-SU-2026:20339-1

RHSA-2026:10076

RHSA-2026:10734

RHSA-2026:10735

RHSA-2026:10951

RHSA-2026:11323

RHSA-2026:6340

RHSA-2026:6727

RHSA-2026:6743

RHSA-2026:6799

RHSA-2026:6918

RHSA-2026:6958

RHSA-2026:9640

RHSA-2026:9641

USN-8042-1

Affected Products

Freerdp

Linuxmint

Rocky Linux

Ubuntu

References · 151

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23948.json · Exploit
• https://github.com/FreeRDP/FreeRDP/commit/4d44e3c097656a8b9ec696353647b0888ca45860 · Patch
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6f3c-qvqq-2px5 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:6918 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/729115 · Security Note
• https://ubuntu.com/security/CVE-2026-24677 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-24676 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2026:6918 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8042-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-24678 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23948 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23948 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23948 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2026:6340 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-6340.html · Vendor Advisory