9.8

CVE-2025-55232: microsoft hpc_pack Deserialization of Untrusted Data

CVSS: 9.8v3.1CriticalAnalyzed
Published 09-09-2025Last modified 20-02-2026
Open JSON

Vulnerability summary

CVE-2025-55232 is a critical (CVSS 9.8) Deserialization of Untrusted Data vulnerability in microsoft hpc_pack. EPSS estimates a 2.13% chance of exploitation in the next 30 days, higher than 81.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
2.13%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-09-2025
    PublishedVulnerability first disclosed.
  2. 20-02-2026
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

2.13%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

+0.07 pp

From 2.06% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft2 products

1 vendor · 2 products

References

1 links