CVE-2025-13357
CWE-1188Published: November 21, 2025· Updated: Jun 17, 2026
Official Description
Vault’s Terraform Provider incorrectly set the default deny_null_bind parameter for the LDAP auth method to false by default, potentially resulting in an insecure configuration. If the underlying LDAP server allowed anonymous or unauthenticated binds, this could result in authentication bypass. This vulnerability, CVE-2025-13357, is fixed in Vault Terraform Provider v5.5.0.
Risk Analysis
This critical vulnerability in Vault's Terraform Provider, prior to v5.5.0, incorrectly defaults 'deny_null_bind' to false for the LDAP auth method. If the underlying LDAP server allows anonymous or unauthenticated binds, this could result in authentication bypass. The CVSS score of 9.8 indicates extreme urgency, though no EPSS score is available to gauge exploitation likelihood.
No public exploit is known for this vulnerability, and it is not listed in CISA's KEV catalog. The flaw is remotely exploitable over the network with low attack complexity, making it a significant concern.
Upgrade Vault Terraform Provider to v5.5.0 or later. Ensure that 'deny_null_bind' is explicitly set to true in your LDAP auth method configuration.
Technical Analysis
CVE-2025-13357 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (1)
Quick Facts
Related CVEs (CWE-1188)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-13357 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts