CVE-2025-6203
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Hashicorp Vault
PublishedAug 28, 2025
First seenAug 28, 2025
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- hashicorp vault1.16.27, 1.21.0, 1.18.15, 1.19.11, 1.20.5 or later
- github.com/hashicorp/vault1.20.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hashicorp vault | 1.15.0 ≤ v < 1.16.27, 1.15.0 ≤ v < 1.21.0, 1.18.0 ≤ v < 1.18.15, 1.19.0 ≤ v < 1.19.11, 1.20.0 ≤ v < 1.20.5 | 1.16.27, 1.21.0, 1.18.15, 1.19.11, 1.20.5 |
| github.com/hashicorp/vaultGo | v < 1.20.3 | 1.20.3 |
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