Deserialization in Modular Max
CVE-2025-60455
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/modular/modular/issues/4795 (Patch, Issue Tracking)
- github.com/modular/modular/blame/main/max/serve/kvcache_agent/kvcache_agent.py (Broken Link)
- github.com/modular/modular/commit/10620059fb5c47fb0c30e5d21a8ff3b8d622fba4 (Patch)
- github.com/modular/modular/commit/ee9c4ab02345dd30bed8b79771b6909ff1b930a1 (Patch)
- github.com/modular/modular/commit/b20e749fa892dbe772e890a268002f732164d9f5 (Patch)
- www.oligo.security/blog/shadowmq-how-code-reuse-spread-critical-vulnerabilities… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-60455?
- CVE-2025-60455 is a high-severity vulnerability in Modular Max, classified under Deserialization of Untrusted Data. CVSS score: 8.4/10. Published 2025-11-18.
- How severe is CVE-2025-60455?
- High severity. CVSS v3 base score is 8.4 out of 10.