Deserialization in Bentoml

CVE-2025-32375

BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.8, there was an insecure deserialization in BentoML's runner server. By setting specific headers and parameters in the POST request, it is possible to execute any unauthorized arbitrary code on the server, which will grant the attackers to have the initial access and information disclosure on the server. This vulnerability is fixed in 1.4.8.

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.524 (99.0th percentile), scored .

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-32375: held from 0.524 to 0.524.

EPSS over last 30 days · oldest: 0.524 · newest: 0.524 · change: 0.000

Affected products

  • Bentoml — versions >= 1.0, < 1.4.8

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-32375?
CVE-2025-32375 is a critical-severity vulnerability in Bentoml, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-04-09.
How severe is CVE-2025-32375?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-32375 known to be exploited?
7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.