7.5

CVE-2025-6203: hashicorp vault

CVSS: 7.5v3.1HighAnalyzed
AliasesCGA-2xmm-99c6-jmpjCGA-4f66-wfrg-6jvpCGA-6wqp-2j8j-8p3p
Published 28-08-2025Last modified 23-10-2025
Open JSON

Vulnerability summary

CVE-2025-6203 is a high (CVSS 7.5) vulnerability in hashicorp vault. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.73%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 6
OPENSUSE-SU-2025:15538-1OPENSUSE-SU-2026:21483-1SUSE-SU-2025:03289-1CGA-2WWC-7RXP-GCWWCGA-HRMR-VQ7M-5MJMCGA-V9VG-WJX4-JPR9

Timeline

  1. 28-08-2025
    PublishedVulnerability first disclosed.
  2. 23-10-2025
    Last modifiedVulnerability information updated.

Description

A malicious user may submit a specially-crafted complex payload that otherwise meets the default request size limit which results in excessive memory and CPU consumption of Vault. This may lead to a timeout in Vault’s auditing subroutine, potentially resulting in the Vault server to become unresponsive. This vulnerability, CVE-2025-6203, is fixed in Vault Community Edition 1.20.3 and Vault Enterprise 1.20.3, 1.19.9, 1.18.14, and 1.16.25.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.73%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

+0.04 pp

From 0.70% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.73%

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

Chainguard9 products
  • splunk-otel-collector< 0.132.0-r2
  • splunk-otel-collector-compat< 0.132.0-r2
  • splunk-otel-collector-doc< 0.132.0-r2
  • splunk-otel-collector-fips< 0.132.0-r1
  • vault-1.16All versions (No fix recorded)
Wolfi3 products
  • splunk-otel-collector< 0.132.0-r2
  • splunk-otel-collector-compat< 0.132.0-r2
  • splunk-otel-collector-doc< 0.132.0-r2
Hashicorp2 products
  • vault≥ 1.15.0, < 1.16.27 | ≥ 1.15.0, < 1.21.0 | ≥ 1.18.0, < 1.18.15 | ≥ 1.19.0, < 1.19.11 | ≥ 1.20.0, < 1.20.5
  • vault enterprise≥ 1.15.0, < 1.21.2
Github.com/hashicorp1 product
  • vault< 1.20.3
Opensuse1 product
  • openbao&distro=openSUSE Tumbleweed< 2.4.1-1.1

5 vendors · 16 products

References

8 links