---
cve: "CVE-2025-61727"
severity: "MEDIUM"
cvss: 6.5
epss: "29%"
vendor: "Go standard library"
kev: false
exploited: false
published: "2025-12-03 20:16:25"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T16:50:14+02:00"
---

# CVE-2025-61727

> 6.5 MEDIUM

## Beschreibung

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 1296453960bac0fb5675853c40e3747e5237e16e (Commit)
- fefb02adf45c4bcc879bd406a8d61f2a292c26a9 (Commit)

## Referenzen

- <https://go.dev/cl/723900>
- <https://go.dev/issue/76442>
- <https://groups.google.com/g/golang-announce/c/8FJoBkPddm4>
- <https://pkg.go.dev/vuln/GO-2025-4175>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-61727) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_