OpenVPN

Products

Exploited and recent CVEs

• CVE-2026-115402 Medium 5.7 OpenVPN ovpn-dco-win 0.6.5 through 2.8.13 allows unprivileged local users to cause a denial of service (system crash) via a race condition in the TCP connect path. 0.1%
• CVE-2026-106017 Medium 6.3 Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions. 0.2%
• CVE-2026-84471 High 7.2 The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or l 0.4%
• CVE-2026-105390 Medium 6.9 Improper synchronization in the OpenVPN ovpn-dco-win for Windows versions 0.6.5 through 1.3.5 and 2.4.0 through 2.8.7 allows local attackers to trigger a deadlock via a crafted write to the ovpn-dco d 0.1%
• CVE-2026-88964 High 7.1 An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search 0.4%
• CVE-2026-84790 High 7.6 OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field 0.1%
• CVE-2026-82325 Medium 6.8 A use-after-free vulnerability in the OpenVPN ovpn-dco-win driver version 2.5.0 through 2.8.6 allows local authenticated users to cause a system crash via crafted control messages 0.1%
• CVE-2026-84732 High 8.7 Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow 0.3%
• CVE-2026-84256 High 7.7 An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.7 on Windows allows remote authenticated users to execute arbitrary commands via a crafted certificate subject 0.4%
• CVE-2026-84226 High 8.5 OpenVPN version 2.5.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to perform a binary planting attack during network configuration steps 0.1%
• CVE-2026-82312 Low 1.8 OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to cause a denial of service via a NULL DACL on named IPC objects 0.1%
• CVE-2026-81830 Medium 5.6 The Windows interactive service in OpenVPN 2.4.0 through 2.6.22 allows local authenticated users to bypass the trusted configuration directory constraint via incorrect file path validation 0.2%
• CVE-2026-81738 Low 2.3 OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries 0.3%
• CVE-2026-78221 Medium 5.9 An incorrect buffer size calculation in the Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to cause memory corruption or disclose sensitive informatio 0.1%
• CVE-2026-78043 Medium 5.6 The Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via 0.2%
• CVE-2026-63650 Low 2.0 OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field 0.2%
• CVE-2026-63649 Medium 4.1 The Windows interactive service in OpenVPN 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrar 0.3%
• CVE-2026-12932 High 7.1 A memory leak in the tls-crypt-v2 client key extraction in OpenVPN 2.5.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service (memory exhaustion) via a floo 0.4%
• CVE-2026-12996 Medium 6.0 A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS s 0.5%
• CVE-2026-11771 High 7.0 OpenVPN version 2.1.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows attackers via an off-by-one buffer write in the NTLM proxy authentication to potentially cause a crash via a crafted NTLM respo 0.4%
• CVE-2026-13117 Medium 6.0 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 0.4%
• CVE-2026-13379 Medium 5.1 The Windows interactive service in OpenVPN 2.7_alpha1 through 2.7.4 allows remote attackers to cause persistent DNS state pollution or a service crash via a crafted search domain during the disconnect 0.3%
• CVE-2025-3110 Medium 6.9 OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behind a reverse proxy 0.4%
• CVE-2026-13122 Medium 5.9 OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when ext 0.5%
• CVE-2026-13698 Medium 6.0 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 s 0.5%
• CVE-2026-11604 Medium 5.6 An incorrect buffer size calculation in the epoch key generator in OpenVPN ovpn-dco-win version 2.0.0 through 2.8.3 allows a remote authenticated peer to trigger a heap-based buffer overflow and kerne 0.3%
• CVE-2026-40215 Medium 6.1 A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS 0.4%
• CVE-2026-35058 Medium 6.9 Improper validation of packet length during tls-crypt-v2 key extraction in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows authenticated attackers to trigger a fatal assertion and cau 0.5%
• CVE-2026-2738 Medium 5.6 Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packe 0.1%
• CVE-2025-15497 Low 3.8 Insufficient epoch key slot processing in OpenVPN 2.7_alpha1 through 2.7_rc5 allows remote authenticated users to trigger an assert resulting in a denial of service 0.4%