Critical severity · published Nov 21, 2025
CVE-2025-13357
Vault Terraform Provider Applied Incorrect Defaults for LDAP Auth Method
9.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tooling · HashiCorp
4.2.0 before 5.5.0 · source: vendor
TP
Terraform Provider · Hashicorp
4.2.0 before 5.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-13357
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-13357
Vendor Advisory
https://discuss.hashicorp.com/t/hcsec-2025-33-vault-terraform-provider-applied-incorrect-defaults-for-ldap-auth-method/76822
More from Tooling
10.0
CVE-2026-16326
consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
10.0
CVE-2026-16498
terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
9.9
CVE-2026-110720
Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding rules
9.6
CVE-2026-8715
Vault Secrets Operator vulnerable to arbitrary file read and credential exfiltration via AppRole secretIDPath
8.9
CVE-2026-16496
terraform-mcp-server vulnerable to cross-user credential inheritance if an MCP session ID is obtained by another user