Vulnerability · Published Apr 2, 2025 · Assigned by OpenVPN
CVE-2025-2704
High 7.5
In plain English
A high-severity security flaw in OpenVPN from OpenVPN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.8%top 41.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenVPN version 2.6.1 through 2.6.13 in server mode using TLS-crypt-v2 allows remote attackers to trigger a denial of service by corrupting and replaying network packets in the early handshake phase
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | openvpn | 2.6.16-r0 | ALPINE-CVE-2025-2704 |
| Alpine:v3.21 | openvpn | 2.6.14-r0 | ALPINE-CVE-2025-2704 |
| Alpine:v3.22 | openvpn | 2.6.14-r0 | ALPINE-CVE-2025-2704 |
| Alpine:v3.23 | openvpn | 2.6.14-r0 | ALPINE-CVE-2025-2704 |
| Alpine:v3.24 | openvpn | 2.6.14-r0 | ALPINE-CVE-2025-2704 |
| Debian:12 | openvpn | 2.6.3-1+deb12u3 | DEBIAN-CVE-2025-2704 |
| Debian:13 | openvpn | 2.6.14-1 | DEBIAN-CVE-2025-2704 |
| Debian:14 | openvpn | 2.6.14-1 | DEBIAN-CVE-2025-2704 |
| Ubuntu:24.04:LTS | openvpn | 2.6.12-0ubuntu0.24.04.3 | UBUNTU-CVE-2025-2704 |
| Ubuntu:24.04:LTS | openvpn | 2.6.12-0ubuntu0.24.04.3 | USN-7411-1 |
Affected products (as reported)
Weakness: CWE-754 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H