CVE-2025-6203 – HashiCorp Vault CPU and Memory Exhaustion Vulnerability

CVE ID : CVE-2025-6203

Published : Aug. 28, 2025, 8:15 p.m. | 29 minutes ago

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.

Severity: 7.5 | HIGH

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