6.8

CVE-2025-6037: hashicorp vault Improper Certificate Validation

CVSS: 6.8v3.1MediumAnalyzed
AliasesCGA-crpj-cpw2-hj9fCGA-mm3f-wfgp-v65hGHSA-6c5r-4wfc-3mcx
Published 01-08-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-6037 is a medium (CVSS 6.8) Improper Certificate Validation vulnerability in hashicorp vault. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.1% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 3
OPENSUSE-SU-2025:15434-1SUSE-SU-2025:02912-1CGA-85G2-WJ5Q-MH33

Timeline

  1. 01-08-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

Vault and Vault Enterprise (“Vault”) TLS certificate auth method did not correctly validate client certificates when configured with a non-CA certificate as [+trusted certificate+|https://developer.hashicorp.com/vault/api-docs/auth/cert#certificate]. In this configuration, an attacker may be able to craft a malicious certificate that could be used to impersonate another user. Fixed in Vault Community Edition 1.20.1 and Vault Enterprise 1.20.1, 1.19.7, 1.18.12, and 1.16.23.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

0.00 pp

From 0.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard6 products
  • splunk-otel-collector< 0.138.0-r0
  • splunk-otel-collector-fips< 0.138.0-r1
  • vault-1.16All versions (No fix recorded)
  • vault-1.17All versions (No fix recorded)
  • vault-1.18All versions (No fix recorded)
Hashicorp2 products
  • vaultEOL< 1.16.23 | < 1.20.1 | ≥ 1.17.0, < 1.18.12 | ≥ 1.19.0, < 1.19.7 | 1.20.0
  • vault enterprise< 1.20.1
Github.com/hashicorp1 product
  • vault< 1.20.1
Wolfi1 product
  • splunk-otel-collector< 0.138.0-r0

4 vendors · 10 products

References

5 links