CVE-2025-6013Network attack vector

MFA bypass via unnormalized LDAP alias

Published Aug 6, 2025 · Updated Feb 26, 2026

Authentication bypass in HashiCorp Vault and Vault Enterprise allows remote authenticated users to bypass LDAP login MFA. The LDAP backend authenticates a normalized directory name but creates the entity alias from the whitespace-bearing username supplied at login, producing inconsistent or duplicate alias identities. Exploitation requires username_as_alias, MFA enforcement, and equal common names that differ by leading or trailing spaces, granting the resulting token's authorized access without the added factor.

CVSS severity6.5
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in HashiCorp Vault and Vault Enterprise allows remote authenticated users to bypass LDAP login MFA. The LDAP backend authenticates a normalized directory name but creates the entity alias from the whitespace-bearing username supplied at login, producing inconsistent or duplicate alias identities. Exploitation requires username_as_alias, MFA enforcement, and equal common names that differ by leading or trailing spaces, granting the resulting token's authorized access without the added factor.

The record

CVE
CVE-2025-6013
Published
Aug 6, 2025
Updated
Feb 26, 2026
Vendor
HashiCorp
Product
Vault
Classifications
CWE-156, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.10.0 <1.20.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HashiCorp · Vaultversion=1.10.0 <1.20.2
HashiCorp · Vault Enterpriseversion=1.10.0 <1.20.2 changes=[{"at":"1.19.8","status":"unaffected"},{"at":"1.18.13","status":"unaffected"},{"at":"1.16.24","status":"unaffected"}]

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
6.5HashiCorp Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-156Improper Neutralization of Whitespace
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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