Commit 4c5d6b
2026-09-03 15:45:55 uddr: CVE-2026-82312| /dev/null .. Security Announcements/CVE-2026-82312.md | |
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| + | # CVE-2026-82312 - Windows local DoS via NULL DACL on service exit event and netsh guard semaphore |
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| + | OpenVPN 2.x on Windows created the `--service` exit event and the `netsh.exe` guard semaphore with a NULL DACL, which allows a local user to interfere with other users' openvpn processes by blocking the netsh semaphore or by signalling the exit event, leading to a local denial of service. Only setups not using the interactive service, or using the automatic service to start and stop openvpn, are affected. |
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| + | OpenVPN version 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 are affected. This is fixed in version 2.7.7. |
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| + | CVE Record: [CVE-2026-82312](https://www.cve.org/CVERecord?id=CVE-2026-82312) |
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| + | Github: |
| + | * [OpenVPN/openvpn-private-issues#167](https://github.com/OpenVPN/openvpn-private-issues/issues/167) |
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| + | Release notes: |
| + | * [openvpn-2.7.7](https://community.openvpn.net/ReleaseHistory#openvpn-277-released-3-september-2026) |
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| + | Reported-By: DEBRAJ BASAK (https://in.linkedin.com/in/debrajbasak) |