CVE-2025-12106

CRITICAL
Published Dec 1, 2025 Modified Dec 30, 2025 CWE-126

Description

Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses

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CVSS v3.1 Score

9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-126 CWE-126

Affected Products

Vendor Product
openvpn openvpn
openvpn openvpn
openvpn openvpn
openvpn openvpn
openvpn openvpn
openvpn openvpn
openvpn openvpn
openvpn openvpn

References

Frequently Asked Questions

What is CVE-2025-12106? +
Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses It has a CVSS v3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2025-12106? +
CVE-2025-12106 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2025-12106? +
CVE-2025-12106 affects products from openvpn, specifically: openvpn. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-12106? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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