What is CVE-2025-55232?

CVE-2025-55232 is a critical-severity vulnerability in Microsoft Hpc Pack 2019, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-09-09.

How severe is CVE-2025-55232?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-55232 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Microsoft Hpc Pack 2019

CVE-2025-55232

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

Vulnerability class: Insecure Deserialization

EPSS: 0.013 (79.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.

Affected products

Microsoft Hpc Pack 2019 — versions 1.0.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

Microsoft High Performance Compute (HPC) Pack Remote Code Execution Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2025-55232?: CVE-2025-55232 is a critical-severity vulnerability in Microsoft Hpc Pack 2019, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-09-09.
How severe is CVE-2025-55232?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-55232 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.