Vulnerability details
CVE-2021-47864
OSAS Traverse Extension
OSAS Traverse Extension 11 - 'travextensionhostsvc' Unquoted Service Path
CVSS 4.0
8.5High
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.5High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| OSAS | OSAS Traverse Extension | 11 x86 | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2026-01-21
- Last updated
- 2026-04-07
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.15%
Probability of exploitation in 30 days
4.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-428Unquoted Search Path or Element