What’s Vulnerable › Vulnerabilities

CVE-2024-27459

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-08 · updated 2026-06-17
• Weakness: CWE-121

Description

The interactive service in OpenVPN 2.6.9 and earlier allows an attacker to send data causing a stack overflow which can be used to execute arbitrary code with more privileges.

Affected products

• OpenVPN: before 2.5.10; from 2.6.0 before 2.6.10 — fixed in 2.5.10, 2.6.10

How to fix

Upgrade to a fixed version: OpenVPN 2.5.10, 2.6.10. Check the vendor advisory for mitigations.

References

• https://community.openvpn.net/openvpn/wiki/CVE-2024-27459
• https://openvpn.net/security-advisory/ovpnx-vulnerability-cve-2024-27903-cve-2024-27459-cve-2024-24974/
• https://www.mail-archive.com/openvpn-users@lists.sourceforge.net/msg07534.html
• https://community.openvpn.net/openvpn/wiki/CVE-2024-27459
• https://openvpn.net/security-advisory/ovpnx-vulnerability-cve-2024-27903-cve-2024-27459-cve-2024-24974/
• https://www.mail-archive.com/openvpn-users@lists.sourceforge.net/msg07534.html

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