What is CVE-2025-58188?

CVE-2025-58188 is a high-severity vulnerability in Golang Go, classified under Improper Certificate Validation. CVSS score: 7.5/10. Published 2025-10-29.

How severe is CVE-2025-58188?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Golang Go

CVE-2025-58188

Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that assumes they implement the Equal method. This affects programs which validate arbitrary certificate chains.

Vulnerability class: Improper Certificate Validation

Published 2025-10-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (26.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Golang Go
Go Standard Library Crypto/x509 — versions 0, 1.25.0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

go.dev/cl/709853 (Patch)
go.dev/issue/75675 (Issue Tracking)
groups.google.com/g/golang-announce/c/4Emdl2iQ_bI (Mailing List, Release Notes)
pkg.go.dev/vuln/GO-2025-4013 (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Release Notes)

Frequently asked questions

What is CVE-2025-58188?: CVE-2025-58188 is a high-severity vulnerability in Golang Go, classified under Improper Certificate Validation. CVSS score: 7.5/10. Published 2025-10-29.
How severe is CVE-2025-58188?: High severity. CVSS v3 base score is 7.5 out of 10.