CVE-2025-32375: Insecure Deserialization leads to RCE in BentoML's runner server

9.8 CVSS

Description

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.

Classification

CVE ID: CVE-2025-32375

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

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

Problem Types

CWE-502: Deserialization of Untrusted Data

Affected Products

Vendor: bentoml

Product: BentoML

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 17.0% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: poc

SSVC Technical Impact: total

SSVC Automatable: true

References

https://nvd.nist.gov/vuln/detail/CVE-2025-32375
https://github.com/bentoml/BentoML/security/advisories/GHSA-7v4r-c989-xh26

Timeline