Commit 1038d1
2026-09-03 15:39:22 uddr: CVE-2026-78221| /dev/null .. Security Announcements/CVE-2026-78221.md | |
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| + | # CVE-2026-78221 - Windows openvpnserv buffer overread via UTF8 IDN NRPT domains |
| + | |
| + | OpenVPN 2.x on Windows allows attackers to achieve a buffer overread in `openvpnserv` because an incorrect NRPT domains size was passed on, which becomes visible when IDN domains with UTF8 encoding are involved. |
| + | |
| + | OpenVPN version 2.7_alpha1 through 2.7.6 are affected. This is fixed in version 2.7.7. |
| + | |
| + | CVE Record: [CVE-2026-78221](https://www.cve.org/CVERecord?id=CVE-2026-78221) |
| + | |
| + | Github: |
| + | * [OpenVPN/openvpn-private-issues#162](https://github.com/OpenVPN/openvpn-private-issues/issues/162) |
| + | |
| + | Release notes: |
| + | * [openvpn-2.7.7](https://community.openvpn.net/ReleaseHistory#openvpn-277-released-3-september-2026) |
| + | |
| + | Reported-By: BreachX Zero Day Labs (using Typhon AI Mil v2) |