USN-8042-1: FreeRDP vulnerabilities

*USN-8042-1: FreeRDP vulnerabilities

Publication date: 16 February 2026
Overview: Several security issues were fixed in FreeRDP.

Packages

• freerdp2 - RDP client for Windows Terminal Services
• freerdp3 - RDP client for Windows Terminal Services

Details

It was discovered that FreeRDP incorrectly handled memory under certain
circumstances, which could lead to a NULL pointer dereference. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2026-23948)

It was discovered that FreeRDP did not correctly validate the size of
certain variables, which could cause a buffer overflow. An attacker could
possibly use this issue to cause a denial of service or execute arbitrary
code. This issue only affected FreeRDP3 in Ubuntu 24.04 LTS and Ubuntu
25.10. (CVE-2026-24491)

It was discovered that FreeRDP did not correctly validate the size of
certain variables, which could cause a buffer overflow. An attacker could
possibly use this issue to cause a denial of service or execute arbitrary
code. (CVE-2026-24675, CVE-2026-24679, CVE-2026-24682)

It was discovered that FreeRDP had a use after free vulnerability under
certain circumstances. An attacker could use this to cause a denial of
service or possibly execute arbitrary code. (CVE-2026-24676,
CVE-2026-24681)

It was discovered that FreeRDP did not correctly validate the size of
certain variables, which could cause a buffer overflow. An attacker could
possibly use this issue to cause a denial of service or execute arbitrary
code. This issue only affected Ubuntu 25.10. (CVE-2026-24677)

It was discovered that FreeRDP had a use after free vulnerability under
certain circumstances. An attacker could use this to cause a denial of
service or possibly execute arbitrary code. This issue only affected
Ubuntu 25.10. (CVE-2026-24678)

It was discovered that FreeRDP had a use after free vulnerability under
certain circumstances. An attacker could use this to cause a denial of
service or possibly execute arbitrary code. This issue only affected
FreeRDP3 in Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-24680)

It was discovered that FreeRDP had a use after free vulnerability under
certain circumstances. An attacker could use this to cause a denial of
service or possibly execute arbitrary code. This issue only affected
Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10.
(CVE-2026-24683, CVE-2026-24684)

Update instructions
The problem can be corrected by updating your system to the following package versions:

25.10 questing

• freerdp3-x11 – 3.16.0+dfsg-2ubuntu0.1
• libfreerdp3-3 – 3.16.0+dfsg-2ubuntu0.1

24.04 LTS noble

• freerdp2-x11 – 2.11.5+dfsg1-1ubuntu0.1~esm5
• freerdp3-x11 – 3.5.1+dfsg1-0ubuntu1.2
• libfreerdp2-2t64 – 2.11.5+dfsg1-1ubuntu0.1~esm5
• libfreerdp3-3 – 3.5.1+dfsg1-0ubuntu1.2

22.04 LTS jammy

• freerdp2-x11 – 2.6.1+dfsg1-3ubuntu2.10
• libfreerdp2-2 – 2.6.1+dfsg1-3ubuntu2.10

20.04 LTS focal

• freerdp2-x11 – 2.6.1+dfsg1-0ubuntu0.20.04.2+esm3
• libfreerdp2-2 – 2.6.1+dfsg1-0ubuntu0.20.04.2+esm3

18.04 LTS bionic

• freerdp2-x11 – 2.2.0+dfsg1-0ubuntu0.18.04.4+esm5
• libfreerdp2-2 – 2.2.0+dfsg1-0ubuntu0.18.04.4+esm5