---
cve: "CVE-2026-12996"
severity: "MEDIUM"
cvss: 6.0
epss: "46%"
vendor: "OpenVPN"
kev: false
exploited: false
published: "2026-07-30 17:16:28"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T05:11:20+02:00"
---

# CVE-2026-12996

> 6.0 MEDIUM

## Beschreibung

A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 4dee614e4e799d6d4a20bffabd902291c86406f2 (Commit)
- b25bb2a8bda814edab39b4246d4e296330a7a29e (Commit)

## Referenzen

- <https://community.openvpn.net/Security%20Announcements/CVE-2026-12996>
- <https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026>
- <https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026>
- <https://lists.debian.org/debian-lts-announce/2026/07/msg00013.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-12996) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_