CVE Catalog
CVE-2026-13698
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk0.52%
41th percentile - higher than 41% of all known CVEs
Summary
A memory leak vulnerability in OpenVPN versions 2.5.0–2.5.11, 2.6.0–2.6.20, and 2.7_alpha1–2.7.4 allows a remote attacker with a valid tls-crypt-v2 client key to cause a denial of service (DoS).
Risk Assessment
The risk is that a remote attacker can exhaust server memory, leading to service disruption for all VPN users.
Recommendation
Immediately upgrade OpenVPN to version 2.5.12, 2.6.21, or later, which includes a fix for the memory leak.
Original NVD description (English source)
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