CVE-2019-20085
Published: November 3, 2021
Official Description
TVT devices utilizing NVMS-1000 software contain a directory traversal vulnerability via GET /.. requests.
CISA KEV Advisory
TVT NVMS-1000 Directory Traversal Vulnerability
TVT devices utilizing NVMS-1000 software contain a directory traversal vulnerability via GET /.. requests.
Apply updates per vendor instructions.
Risk Analysis
TVT devices using NVMS-1000 software are vulnerable to a directory traversal flaw via GET /.. requests. With an EPSS score of 0.94186 and active exploitation, this vulnerability poses a high risk of unauthorized access to system files.
This vulnerability is actively exploited in the wild. The directory traversal flaw is remotely exploitable via specific GET requests.
Apply available patches or updates for TVT NVMS-1000 software to address the directory traversal vulnerability. Restrict external access to devices running NVMS-1000 to prevent exploitation.
Technical Analysis
CVE-2019-20085 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2019-20085 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-20085 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1