CVE-2021-47864

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 v4.0

8.5 HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

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

EPSS

0.13% chance of exploitation in the next 30 days, 3th percentile

Published

2026-01-21

Updated

2026-04-07

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/49698

References

• CVE Record
• NVD entry

Related

• CVE-2021-47863
• CVE-2021-47865
• CVE-2021-47862
• CVE-2021-47866
• CVE-2021-47861
• CVE-2021-47867