Affected: FreeRDP

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, a NULL pointer dereference vulnerability in rdp_write_logon_info_v2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0. This vulnerability is fixed in 3.22.0.

Affected: Ubuntu:Pro:18.04:LTS: freerdp2, Ubuntu:Pro:20.04:LTS: freerdp2, Ubuntu:22.04:LTS: freerdp2, Ubuntu:24.04:LTS: freerdp3, Ubuntu:Pro:24.04:LTS: freerdp2, Ubuntu:25.10: freerdp3

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 cod…