CVE-2025-6203
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-08-28

Last updated on: 2025-12-18

Assigner: HashiCorp Inc.

Description
A malicious user may submit a specially-crafted complex payload that otherwise meets the default request size limit which results in excessive memory and CPU consumption of Vault. This may lead to a timeout in Vault’s auditing subroutine, potentially resulting in the Vault server to become unresponsive. This vulnerability, CVE-2025-6203, is fixed in Vault Community Edition 1.20.3 and Vault Enterprise 1.20.3, 1.19.9, 1.18.14, and 1.16.25.
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Meta Information
Published
2025-08-28
Last Modified
2025-12-18
Generated
2026-06-16
AI Q&A
2025-08-28
EPSS Evaluated
2026-06-15
NVD
CVE-2025-6203
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
hashicorp vault From 1.15.0 (inc) to 1.16.27 (exc)
hashicorp vault From 1.15.0 (inc) to 1.21.0 (exc)
hashicorp vault From 1.18.0 (inc) to 1.18.15 (exc)
hashicorp vault From 1.19.0 (inc) to 1.19.11 (exc)
hashicorp vault From 1.20.0 (inc) to 1.20.5 (exc)
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 occurs when a malicious user submits a specially-crafted complex payload that meets the default request size limit but causes excessive memory and CPU consumption in Vault. This can lead to a timeout in Vault's auditing subroutine and potentially cause the Vault server to become unresponsive.

Impact Analysis

The vulnerability can cause the Vault server to become unresponsive due to excessive resource consumption, which may disrupt services relying on Vault for secure secret management and auditing.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade Vault to one of the fixed versions: Vault Community Edition 1.20.3 or Vault Enterprise versions 1.20.3, 1.19.9, 1.18.14, or 1.16.25.

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