CVE-2025-3879

Name: CVE-2025-3879
Creator: NVD / NIST
Published: 2025-05-02T17:15:51.273+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2025-3879 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Vault Community, Vault Enterprise (“Vault”) Azure Auth method did not correctly validate the claims in the Azure-issued token, resulting in the potential bypass of the bound_locations parameter on login. Fixed in Vault Community Edition 1.19.1 and Vault Enterprise 1.19.1, 1.18.7, 1.17.14, 1.16.18.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

Vault Community, Vault Enterprise (“Vault”) Azure Auth method did not correctly validate the claims in the Azure-issued token, resulting in the potential bypass of the bound_locations parameter on login. Fixed in Vault Community Edition 1.19.1 and Vault Enterprise 1.19.1, 1.18.7, 1.17.14, 1.16.18.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.35%

27.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Hashicorp	Vault	>= 0.10.0, < 1.16.18
Hashicorp	Vault	>= 0.10.0, < 1.19.1
Hashicorp	Vault	>= 1.17.0, < 1.17.14
Hashicorp	Vault	>= 1.18.0, < 1.18.7
Hashicorp	Vault	1.19.0

References

https://discuss.hashicorp.com/t/hcsec-2025-07-vault-s-azure-authentication-method-bound-location-restriction-could-be-bypassed-on-login/74716Vendor Advisory

Timeline

Published: May 2, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-3879?

How severe is CVE-2025-3879?

CVE-2025-3879 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2025-3879?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-3879?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST