CVE-2021-47864 OSAS Traverse Extension 11 - 'travextensionhostsvc' Unquoted Service Path
Attackers can execute malicious code with LocalSystem privileges by exploiting an unquoted service path in OSAS Traverse Extension.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-47864?
CVE-2021-47864 is a high-severity vulnerability in OSAS Traverse Extension, published on 21 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-428
Which versions are affected by CVE-2021-47864?
How do I fix CVE-2021-47864?
No fix has been published for CVE-2021-47864 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47864 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47864 exists.
Sources
Also known as GHSA-99mq-x342-ppq6.