Deserialization of Untrusted Data in Windows App Client for Windows Desktop - CVE-2026-59124
Published: August 12, 2026
Vulnerability identifier: #VU141544
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-59124
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in Microsoft High Performance Computing (HPC) Pack. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Windows App Client for Windows Desktop
How to mitigate CVE-2026-59124
Install updates from vendor's website.
Windows App Client for Windows Desktop - update to 2.0.1314.0