CVE-2021-47864

HIGH 7.8

OSAS Traverse Extension 11 - 'travextensionhostsvc' Unquoted Service Path

CVSS Score

7.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-428
Vendor	osas
Product	osas traverse extension
Published	Jan 21, 2026
Last Updated	Apr 7, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

OSAS / OSAS Traverse Extension

11 x86

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/49698 web.archive.org: https://web.archive.org/web/20200817150522/https://www.osas.com/ vulncheck.com: https://www.vulncheck.com/advisories/osas-traverse-extension-travextensionhostsvc-unquoted-service-path

Credits

Tech Johnny