CVE-2025-60455: Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the "--experimental-e

Q: How do I fix CVE-2025-60455?

max: upgrade to 25.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-60455 being exploited?

CVE-2025-60455 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-2025-60455 affect?

CVE-2025-60455 affects max. Severity is high (CVSS 8.4). Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the "--experimental-enable-kvcache-agent" feature is used allowing attackers to execute arbitrary code.

Q: How urgent is CVE-2025-60455?

Priority 41/100. High severity; Public exploit reference

This month

HIGH 8.4UPGRADE

CVE-2025-60455 is a high-severity flaw (CVSS 8.4) affecting max. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the "--experimental-enable-kvcache-agent" feature is used allowing attackers to execute arbitrary code.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-502
Published	2025-11-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: modular

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-18 19:15 UTCPublished CVE record published
2026-06-17 09:49 UTCUpdated Record last modified

modular max UPGRADE

Affected: < 25.6.0

Fixed in: 25.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy max || rpm -q max || max --version

2. UPGRADE to 25.6.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade max

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade max

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-2025-60455?

max: upgrade to 25.6.0. Exact commands for each OS are on this page.

Is CVE-2025-60455 being exploited?

CVE-2025-60455 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-2025-60455 affect?

CVE-2025-60455 affects max. Severity is high (CVSS 8.4). Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the "--experimental-enable-kvcache-agent" feature is used allowing attackers to execute arbitrary code.

How urgent is CVE-2025-60455?

Priority 41/100. High severity; Public exploit reference

References

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