CVE-2026-13698 PUBLISHED

Assigner: OpenVPN
Reserved: 29.06.2026 Published: 06.07.2026 Updated: 06.07.2026

A memory leak in OpenVPN version 2.5.0 through 2.5.11, 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers with a valid tls-crypt-v2 client key to potentially cause a denial of service

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 6

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	OpenVPN
Product	OpenVPN
Versions	Default: unaffected affected from 2.5.0 to 2.5.11 (incl.) affected from 2.6.0 to 2.6.20 (incl.) affected from 2.7_alpha1 to 2.7.4 (incl.)

References

https://community.openvpn.net/Security%20Announcements/CVE-2026-13698

Problem Types

CWE-401 Missing release of memory after effective lifetime CWE
CWE-770 Allocation of resources without limits or throttling CWE