Vulnerability · Published Jan 21, 2026 · Assigned by VulnCheck
CVE-2021-47864OSAS Traverse Extension 11 - 'travextensionhostsvc' Unquoted Service Path
High 7.8
In plain English
A high-severity security flaw in OSAS Traverse Extension from OSAS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 95.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
OSAS Traverse Extension 11 contains an unquoted service path vulnerability in the TravExtensionHostSvc service running with LocalSystem privileges. Attackers can exploit the unquoted path to inject and execute malicious code by placing executable files in the service's path, potentially gaining elevated system access.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OSAS | OSAS Traverse Extension | 11 x86 |
Weakness: CWE-428 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- ExploitDB-49698 exploit
- Archived Vendor Homepage product
- VulnCheck Advisory: OSAS Traverse Extension 11 - 'travextensionhostsvc' Unquoted Service Path third-party-advisory