Denial of Service Vulnerability in HashiCorp Vault and Vault Enterprise
CVE-2025-12044

7.5HIGH

Key Information:

Vendor

Hashicorp
Status
Vault
Vault Enterprise
Vendor
CVE Published:
23 October 2025

What is CVE-2025-12044?

HashiCorp Vault and Vault Enterprise exhibit a vulnerability that can lead to an unauthenticated denial of service when handling complex JSON payloads. This issue arises from a regression in the implementation of rate limiting, allowing the system to be overwhelmed by unregulated payloads. It is crucial for users to upgrade to the fixed versions, as the flaw could lead to significant service disruptions.

Affected Version(s)

Vault 64 bit 1.20.3 < 1.21.0

Vault Enterprise 64 bit 1.20.3 < 1.21.0

Vault Enterprise 64 bit 1.19.9 < 1.19.11

References

https://discuss.hashicorp.com/t/hcsec-2025-31-vault-vulne...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.
CVE-2025-12044 : Denial of Service Vulnerability in HashiCorp Vault and Vault Enterprise