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Vulnerability record · CVE-2025-60455 · published 18 November 2025

CVE-2025-60455: Modular max deserialization of untrusted data vulnerability

Modular · Max

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.

8.4 CVSS 3.1 High EPSS 0.31% · top 78.6% CWE-502 · Deserialization of untrusted data
8.4CVSS 3.1 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/modular/modular/blame/main/max/serve/kvcache_agent/kvcache_agent.py#L220 Broken Link
https://github.com/modular/modular/commit/10620059fb5c47fb0c30e5d21a8ff3b8d622fba4 Patch
https://github.com/modular/modular/commit/b20e749fa892dbe772e890a268002f732164d9f5 Patch
https://github.com/modular/modular/commit/ee9c4ab02345dd30bed8b79771b6909ff1b930a1 Patch
https://github.com/modular/modular/issues/4795 Issue TrackingPatch
https://www.oligo.security/blog/shadowmq-how-code-reuse-spread-critical-vulnerabilities-across-the-ai-ecosystem ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-60455), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.