CVE-2025-12106: Critical severity OpenVPN OpenVPN vulnerability

Published Dec 1, 2025
·
Updated

Insufficient argument validation in OpenVPN 2.7alpha1 through 2.7rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses

Affected Software

9 affected components
OpenVPN OpenVPN>=2.7_alpha1<=2.7_rc1
OpenVPN OpenVPN=2.6.13
OpenVPN OpenVPN=2.7-alpha1
OpenVPN OpenVPN=2.7-alpha2
OpenVPN OpenVPN=2.7-alpha3
OpenVPN OpenVPN=2.7-beta1
OpenVPN OpenVPN=2.7-beta2
OpenVPN OpenVPN=2.7-beta3
OpenVPN OpenVPN=2.7-rc1

Event History

Dec 1, 2025
CVE Published
via MITRE·12:43 PM
Data Sourced
via MITRE·12:43 PM
DescriptionWeakness
Data Sourced
via NVD·01:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-12106?

CVE-2025-12106 is considered a high severity vulnerability due to its potential to allow an attacker to exploit heap buffer over-read vulnerabilities.

2

How do I fix CVE-2025-12106?

To fix CVE-2025-12106, upgrade to a version of OpenVPN later than 2.7_rc1 that addresses this vulnerability.

3

What versions of OpenVPN are affected by CVE-2025-12106?

OpenVPN versions 2.7_alpha1 through 2.7_rc1 are affected by CVE-2025-12106.

4

What type of vulnerability is CVE-2025-12106?

CVE-2025-12106 is categorized as a heap buffer over-read vulnerability related to insufficient argument validation.

5

Can CVE-2025-12106 be exploited remotely?

Yes, an attacker can exploit CVE-2025-12106 remotely by sending specially crafted data to trigger the vulnerability.

Contact

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