SYSTEM code execution via attacker-controlled OpenSSL configuration
Published Jun 1, 2026 · Updated Jun 1, 2026
Local privilege escalation in TYCHON Enterprise before 1.7.857.82 allows local users to execute code with SYSTEM privileges. Its bundled OpenSSL component sets OPENSSLDIR to a subdirectory where an unprivileged Windows user can place openssl.cnf, which the privileged service then processes. Exploitation requires local write access to that path and grants control of the service's SYSTEM execution context.
Summary
What happened
Local privilege escalation in TYCHON Enterprise before 1.7.857.82 allows local users to execute code with SYSTEM privileges. Its bundled OpenSSL component sets OPENSSLDIR to a subdirectory where an unprivileged Windows user can place openssl.cnf, which the privileged service then processes. Exploitation requires local write access to that path and grants control of the service's SYSTEM execution context.
The record
- CVE
- CVE-2022-4991
- Published
- Jun 1, 2026
- Updated
- Jun 1, 2026
- Vendor
- Tychon
- Product
- TYCHON Enterprise
- Classifications
- CWE-284, T1574
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 1, 2026CVE publishedPublication date reported by the CVE source.
- Jun 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=* <1.7.857.82
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo