---
cve: "CVE-2026-40215"
severity: "MEDIUM"
cvss: 6.1
epss: "0.4%"
vendor: "OpenVPN"
kev: false
exploited: false
published: "2026-06-08 19:59:20"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T23:20:03+02:00"
---

# CVE-2026-40215

> 6.1 MEDIUM

## Beschreibung

A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 8e87f2c34a0fbd64e282711582b106f84660e916 (Commit)
- 59748789497afcad90601d120fecd58cbc1423c4 (Commit)

## Referenzen

- <https://community.openvpn.net/Security%20Announcements/CVE-2026-40215>
- <https://community.openvpn.net/ReleaseHistory#openvpn-272-released-22-april-2026>
- <https://community.openvpn.net/ReleaseHistory#openvpn-2620-released-22-april-2026>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-40215) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_