Is CVE-2021-27860 in the CISA KEV catalog?

Yes. CVE-2021-27860 is on the CISA Known Exploited Vulnerabilities list, added 2022-01-10.

What is the CVSS severity of CVE-2021-27860?

CVE-2021-27860 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-27860?

CVE-2021-27860 has an EPSS score of 39.82% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2021-27860

CRITICALCISA KEVEPSS 98th pctl

9.8

CVSS v3

NVD

Description

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.

CWE-434Unrestricted File Upload

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

39.82%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

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.

Remediation due: 2022-01-24

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-24.