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CVE-2021-27860

Arbitrary file upload vulnerability in FatPipe software

HIGH
8.8
CVSS Score
Published: December 8, 2021 at 04:15 PM UTC
Updated: June 17, 2026 at 03:45 AM UTC
9 products affected across 2 vendorsMpvpn FirmwareIpvpn FirmwareWarp Firmware

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Severity
HIGH8.8
Exploitation
CISA KEV
Exploit prediction
EPSS 40%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score39.7%

EPSS (Exploit Prediction Scoring System) estimates a 39.7% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Jan 10, 2022
Remediation Due
Jan 24, 2022
1742 days overdue
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-27860

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ipvpn Firmware· Fatpipeinc
95%
10.1.2 r60p1010.1.2 r60p1310.1.2 r60p3210.1.2 r60p3510.1.2 r60p4510.1.2 r60p5510.1.2 r60p5810.1.2 r60p58s110.1.2 r60p6510.1.2 r60p7110.1.2 r60p8210.2.2 r1010.2.2 r2510.2.2 r385.2.0 r346.1.2 r70p266.1.2 r70p45-m6.1.2 r70p75-m7.1.2 r399.1.2 r1299.1.2 r1449.1.2 r1509.1.2 r1569.1.2 r161p129.1.2 r161p169.1.2 r161p179.1.2 r161p29.1.2 r161p209.1.2 r161p269.1.2 r161p39.1.2 r1649.1.2 r164p49.1.2 r164p59.1.2 r1659.1.2 r180p29.1.2 r185
fatpipeinc-ipvpn (same device)
Mpvpn Firmware· Fatpipeinc
95%
10.1.2 r60p1010.1.2 r60p1310.1.2 r60p3210.1.2 r60p3510.1.2 r60p4510.1.2 r60p5510.1.2 r60p5810.1.2 r60p58s110.1.2 r60p6510.1.2 r60p7110.1.2 r60p8210.2.2 r1010.2.2 r2510.2.2 r385.2.0 r346.1.2 r70p266.1.2 r70p45-m6.1.2 r70p75-m7.1.2 r399.1.2 r1299.1.2 r1449.1.2 r1509.1.2 r1569.1.2 r161p129.1.2 r161p169.1.2 r161p179.1.2 r161p29.1.2 r161p209.1.2 r161p269.1.2 r161p39.1.2 r1649.1.2 r164p49.1.2 r164p59.1.2 r1659.1.2 r180p29.1.2 r185
fatpipeinc-mpvpn (same device)
Warp Firmware· Fatpipeinc
95%
10.1.2 r60p1010.1.2 r60p1310.1.2 r60p3210.1.2 r60p3510.1.2 r60p4510.1.2 r60p5510.1.2 r60p5810.1.2 r60p58s110.1.2 r60p6510.1.2 r60p7110.1.2 r60p8210.2.2 r1010.2.2 r2510.2.2 r385.2.0 r346.1.2 r70p266.1.2 r70p45-m6.1.2 r70p75-m7.1.2 r399.1.2 r1299.1.2 r1449.1.2 r1509.1.2 r1569.1.2 r161p129.1.2 r161p169.1.2 r161p179.1.2 r161p29.1.2 r161p209.1.2 r161p269.1.2 r161p39.1.2 r1649.1.2 r164p49.1.2 r164p59.1.2 r1659.1.2 r180p29.1.2 r185
fatpipeinc-warp (same device)
IPVPN· Fatpipe
60%
10.1 ≤ v < 10.1.2r60p9210.2 ≤ v < 10.2.2r44p110.110.2
Affected range stops below 10.1.2r60p92, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.2.2r44p1, so it looks safe — our inference, not a vendor statement
MPVPN· Fatpipe
60%
10.1 ≤ v < 10.1.2r60p9210.2 ≤ v < 10.2.2r44p110.110.2
Affected range stops below 10.1.2r60p92, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.2.2r44p1, so it looks safe — our inference, not a vendor statement
WARP· Fatpipe
60%
10.1 ≤ v < 10.1.2r60p9210.2 ≤ v < 10.2.2r44p110.110.2
Affected range stops below 10.1.2r60p92, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.2.2r44p1, so it looks safe — our inference, not a vendor statement
Ipvpn· Fatpipeincdevice
80%
All versions
Mpvpn· Fatpipeincdevice
80%
All versions
Warp· Fatpipeincdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.fatpipeinc.com/support/cve-list.php
ExploitMitigationThird Party AdvisoryUS Government Resource
Source: [email protected]
https://www.ic3.gov/Media/News/2021/211117-2.pdf
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27860

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-434

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