CVE-2025-55232: Microsoft Hpc Pack

Critical severity, CVSS 9.8. EPSS: 2.1% chance of exploitation in the next 30 days.

Deserialization of untrusted data in Microsoft High Performance Compute Pack (HPC) allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft Hpc Pack: before 6.3.8352 (fixed in 6.3.8352)

Published 2025-09-09. Last modified 2026-06-17.