Out-of-bounds Write Affecting vllm package, versions [0.10.2, 0.11.1)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.21% (43rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-PYTHON-VLLM-14101291
  • published23 Nov 2025
  • disclosed20 Nov 2025
  • creditAXION Omri

Introduced: 20 Nov 2025

NewCVE-2025-62164  (opens in a new tab)
CWE-123  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-502  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade vllm to version 0.11.1 or higher.

Overview

vllm is an A high-throughput and memory-efficient inference and serving engine for LLMs

Affected versions of this package are vulnerable to Out-of-bounds Write via the to_dense function in the Completions API endpoint when processing user-supplied prompt embeddings. An attacker can achieve memory corruption, crash the server process, or potentially execute arbitrary code by submitting maliciously crafted serialized tensors that bypass internal bounds checks.

CVSS Base Scores

version 4.0
version 3.1