CVE-2026-13698 | CVE Tracker

Description

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

Scores

CVSS scores of CVE-2026-13698, by who scored it
Scored by	CVSS	Score	Vector
OpenVPNCNA (assigner)	4.0	Medium6.0	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
NVDNVD · Analyzed	4.0	Medium6.0	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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.55% · top 54% of all CVEs (6 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.0.

Weakness

CWE-401 Missing release of memory after effective lifetime (opens in a new tab)All about CWE-401 and its CVEs
CWE-770 Allocation of resources without limits or throttling (opens in a new tab)All about CWE-770 and its CVEs

Affected products

OpenVPN · OpenVPN
- affected 2.5.0 – ≤ 2.5.11
- affected 2.6.0 – ≤ 2.6.20
- affected 2.7_alpha1 – ≤ 2.7.4

References (1)

https://community.openvpn.net/Security%20Announcements/CVE-2026-13698 (opens in a new tab)vendor-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2026-13698](https://trackcve.app/badge/CVE-2026-13698.svg)](https://trackcve.app/cve/CVE-2026-13698)

Record last updated 6 Jul 2026, 15:28 UTC.

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…