Commit d72ecc
2026-09-03 15:49:08 uddr: CVE-2026-84256| /dev/null .. Security Announcements/CVE-2026-84256.md | |
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| + | # CVE-2026-84256 - Windows CreateProcess() command line quoting bypass via cmd.exe metacharacters |
| + | |
| + | OpenVPN 2.x on Windows does not correctly quote command lines passed to `CreateProcess()` for characters that are special to `cmd.exe`. In combination with a validation script and a rogue CA, this could be used to make OpenVPN misbehave. |
| + | |
| + | OpenVPN version 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.6 are affected. This is fixed in version 2.7.7. |
| + | |
| + | CVE Record: [CVE-2026-84256](https://www.cve.org/CVERecord?id=CVE-2026-84256) |
| + | |
| + | Github: |
| + | * [OpenVPN/openvpn-private-issues#159](https://github.com/OpenVPN/openvpn-private-issues/issues/159) |
| + | |
| + | Release notes: |
| + | * [openvpn-2.7.7](https://community.openvpn.net/ReleaseHistory#openvpn-277-released-3-september-2026) |
| + | |
| + | Reported-By: Clouditera Security |