CVE-2023-6247

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-29 · updated 2026-06-17
Weakness: CWE-476

Description

The PKCS#7 parser in OpenVPN 3 Core Library versions through 3.8.3 did not properly validate the parsed data, which would result in the application crashing.

Affected products

OpenVPN 3 Core Library: before 3.8.4 — fixed in 3.8.4

How to fix

Upgrade to a fixed version: OpenVPN 3 Core Library 3.8.4. Check the vendor advisory for mitigations.

References

https://community.openvpn.net/openvpn/wiki/CVE-2023-6247
https://community.openvpn.net/openvpn/wiki/CVE-2023-6247

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