Vulnerability · Published Dec 3, 2025 · Assigned by OpenVPN

CVE-2025-13751

Low 1.3

In plain English

A low-severity resource allocation without limits 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 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)1.3Low
Exploit odds (30 days)0.2%top 92.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Interactive service agent in OpenVPN version 2.5.0 through 2.6.16 and 2.7_alpha1 through 2.7_rc2 on Windows allows a local authenticated user to connect to the service and trigger an error causing a local denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20openvpn0ALPINE-CVE-2025-13751
Alpine:v3.21openvpn0ALPINE-CVE-2025-13751
Alpine:v3.22openvpn0ALPINE-CVE-2025-13751
Alpine:v3.23openvpn0ALPINE-CVE-2025-13751
Alpine:v3.24openvpn0ALPINE-CVE-2025-13751

Affected products (as reported)

VendorProductVersions
OpenVPN OpenVPN 2.5.0 – through 2.6.162.7_alpha1 – through 2.7_rc2

Weakness: CWE-770, CWE-775, CWE-841 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Clear

References