CVE-2025-6203
7.5 · HIGHOverview
CVE-2025-6203 is a high-severity vulnerability affecting hashicorp vault. It was published on August 28, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from hashicorp. Update vault to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| hashicorp | vault | >= 1.15.0, < 1.16.27 | Affected |
Frequently Asked Questions
What is CVE-2025-6203?
CVE-2025-6203 is a high-severity vulnerability affecting hashicorp vault. It was published on August 28, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-6203?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-6203?
Check the references section for vendor advisories and patches from hashicorp. Update vault to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-6203?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-6203 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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