What’s Vulnerable › Vulnerabilities
CVE-2022-4991: Tychon is vulnerable to privilege escalation due to OPENSSLDIR location
- Severity: high (CVSS 7.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-01 · updated 2026-07-22
Description
Tychon includes an OpenSSL component that specifies an OPENSSLDIR variable as a subdirectory that may be controllable by an unprivileged user on Windows. Tychon contains a privileged service that uses this OpenSSL component. A user who can place a specially-crafted openssl.cnf file at an appropriate path may be able to achieve arbitrary code execution with SYSTEM privileges.
Affected products
- Tychon: before 1.7.857.82 — fixed in 1.7.857.82
How to fix
Upgrade to a fixed version: Tychon 1.7.857.82. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2022-4991 or the next vulnerability affects your stack