CVE-2025-65942
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-25

Last updated on: 2025-11-25

Assigner: GitHub, Inc.

Description
VictoriaMetrics is a scalable solution for monitoring and managing time series data. In versions from 1.0.0 to before 1.110.23, from 1.111.0 to before 1.122.8, and from 1.123.0 to before 1.129.1, affected versions are vulnerable to DoS attacks because the snappy decoder ignored VictoriaMetrics request size limits allowing malformed blocks to trigger excessive memory use. This could lead to OOM errors and service instability. The fix enforces block-size checks based on MaxRequest limits. This issue has been patched in versions 1.110.23, 1.122.8, and 1.129.1.
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Meta Information
Published
2025-11-25
Last Modified
2025-11-25
Generated
2026-06-16
AI Q&A
2025-11-26
EPSS Evaluated
2026-06-15
NVD
CVE-2025-65942
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
victoriametrics victoriametrics 1.122.8
victoriametrics victoriametrics 1.110.23
victoriametrics victoriametrics 1.0.0
victoriametrics victoriametrics 1.129.1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
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Executive Summary

This vulnerability in VictoriaMetrics occurs because the snappy decoder does not enforce request size limits, allowing malformed data blocks to cause excessive memory usage. This can lead to out-of-memory (OOM) errors and instability in the service. The issue affects certain versions before specific patches and has been fixed by enforcing block-size checks based on maximum request limits.

Impact Analysis

The vulnerability can cause denial of service (DoS) by triggering excessive memory consumption, leading to out-of-memory errors and service instability. This can disrupt monitoring and management of time series data, potentially impacting system availability.

Mitigation Strategies

Upgrade VictoriaMetrics to a patched version: 1.110.23, 1.122.8, or 1.129.1 or later. These versions include fixes that enforce block-size checks based on MaxRequest limits to prevent excessive memory use and DoS attacks.

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