CVE-2026-32184: Deserialization of untrusted data in Microsoft High Performance Compute Pack (HPC) allows an authorized attack

Q: How do I fix CVE-2026-32184?

hpc pack: upgrade to 6.3.8355. Exact commands for each OS are on this page.

Q: Is CVE-2026-32184 being exploited?

CVE-2026-32184 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-32184 affect?

CVE-2026-32184 affects hpc pack. Severity is high (CVSS 7.8). Deserialization of untrusted data in Microsoft High Performance Compute Pack (HPC) allows an authorized attacker to elevate privileges locally.

Q: How urgent is CVE-2026-32184?

Priority 52/100. High severity; On your watchlist

This month

HIGH 7.8WATCHLISTUPGRADE

CVE-2026-32184 is a high-severity flaw (CVSS 7.8) affecting hpc pack. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Deserialization of untrusted data in Microsoft High Performance Compute Pack (HPC) allows an authorized attacker to elevate privileges locally.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-04-14
Last modified	2026-10-26

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-14 18:17 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

microsoft hpc pack UPGRADE

Affected: < 6.3.8355

Fixed in: 6.3.8355

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hpc-pack || rpm -q hpc-pack || hpc-pack --version

2. UPGRADE to 6.3.8355 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hpc-pack

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hpc-pack

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-32184?

hpc pack: upgrade to 6.3.8355. Exact commands for each OS are on this page.

Is CVE-2026-32184 being exploited?

CVE-2026-32184 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-32184 affect?

CVE-2026-32184 affects hpc pack. Severity is high (CVSS 7.8). Deserialization of untrusted data in Microsoft High Performance Compute Pack (HPC) allows an authorized attacker to elevate privileges locally.

How urgent is CVE-2026-32184?

Priority 52/100. High severity; On your watchlist

References

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