CVE-2021-27860 — FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit

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 vulnera

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
FatPipe	WARP	10.1, 10.2
FatPipe	IPVPN	10.1, 10.2
FatPipe	MPVPN	10.1, 10.2

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-01-10. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2021-12-08T16:15:48.319Z
• Last modified: 2025-10-21T23:25:23.273Z
• Added to CISA KEV: 2022-01-10
• BOD 22-01 due: 2022-01-24

09References

• www.fatpipeinc.com — https://www.fatpipeinc.com/support/cve-list.php
• www.ic3.gov — https://www.ic3.gov/Media/News/2021/211117-2.pdf