CVE-2021-27860
Published: January 10, 2022
Official Description
A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software allows a remote, unauthenticated attacker to upload a file to any location on the filesystem.
CISA KEV Advisory
FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit
A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software allows a remote, unauthenticated attacker to upload a file to any location on the filesystem.
Apply updates per vendor instructions.
Risk Analysis
This high-severity vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software allows a remote, unauthenticated attacker to upload files to any filesystem location. The high EPSS score of 0.42561 indicates a significant likelihood of exploitation, and its presence in CISA's KEV catalog confirms it has been actively exploited.
This vulnerability is actively exploited in the wild, indicating a critical and immediate threat. It is remotely exploitable by unauthenticated attackers.
Apply available patches or upgrade FatPipe WARP, IPVPN, and MPVPN software to a secure version. Restrict network access to the web management interface.
Technical Analysis
CVE-2021-27860 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-2021-27860 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-2021-27860 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