CVE-2021-27860
KEVFatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit
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.
A vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p92 and 10.2.2r44p1 allows a remote, unauthenticated attacker to upload a file to any location on the filesystem. The FatPipe advisory identifier for this vulnerability is FPSA006.
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedDec 8, 2021
Last modifiedJun 17, 2026
Added to KEVJan 10, 2022
Remediation dueJan 24, 2022
References
- fatpipeinc.com/support/cve-list.phpVendor Advisory
- ic3.gov/Media/News/2021/211117-2.pdfExploitMitigation
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27860US Government Resource
0 recent articles mention this CVE
83
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1736 days
- CVSS
- 9.8 CRITICAL
- EPSS (30-day exploit probability)
- 39.7% · top 1% of all CVEs
- Weakness
- CWE-434
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.