CVE-2026-13117 — HIGH (8.1)

Q: How severe is CVE-2026-13117?

CVE-2026-13117 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-13117?

Check the references section above for vendor advisories and patch information. Affected products include: Openvpn Openvpn.

Vulnerability Description

An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage

CVSS Score

8.1

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Openvpn	Openvpn	>= 2.6.0, < 2.6.21

Related Weaknesses (CWE)

CWE-416

References

https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026Release Notes
https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026Release Notes
https://community.openvpn.net/Security%20Announcements/CVE-2026-13117Vendor Advisory

FAQ

What is CVE-2026-13117?

CVE-2026-13117 is a vulnerability with a CVSS score of 8.1 (HIGH). An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a de...

How severe is CVE-2026-13117?

CVE-2026-13117 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-13117?

Check the references section above for vendor advisories and patch information. Affected products include: Openvpn Openvpn.