CVE-2021-27860
Arbitrary file upload vulnerability in FatPipe software
Exploited in the wild. In CISA KEV since 2022‑01‑10. Fixed versions are out.
What to do
Find your product and version, then upgrade to the build on the right.
- FatPipe WARPAffected: ≥ 10.1, < 10.1.2r60p92Upgrade to: 10.1.2r60p92Affected: ≥ 10.2, < 10.2.2r44p1Upgrade to: 10.2.2r44p1Stated by: CVE record
- FatPipe IPVPNAffected: ≥ 10.1, < 10.1.2r60p92Upgrade to: 10.1.2r60p92Affected: ≥ 10.2, < 10.2.2r44p1Upgrade to: 10.2.2r44p1Stated by: CVE record
- FatPipe MPVPNAffected: ≥ 10.1, < 10.1.2r60p92Upgrade to: 10.1.2r60p92Affected: ≥ 10.2, < 10.2.2r44p1Upgrade to: 10.2.2r44p1Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
Coverage timeline
0 publishersAdded to CISA KEV catalog
Sourced from public security reporting — each date is when it was published, not when it happened.
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Listed as exploited in the wild since 2022-01-10.
US federal agencies must remediate by 2022-01-24.
Apply updates per vendor instructions.
- Public exploits
1 source with a proof of concept or module.
Exploit links, PoCs and Metasploit modules after sign-in- EPSS
40% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
The patch came 133 days before any public exploit.
- OpenVAS check added
- Public exploit / PoCsource: other
- Patch availableworkaround available, record updated
- Added to CISA KEV
- Publishedweakness classified, att&ck mapped
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Scored 9.8 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Command and ControlT1105Ingress Tool Transferhigh confidence
- Initial AccessT1190Exploit Public-Facing Applicationhigh confidence
- PersistenceT1505Server Software Componenthigh confidence
Sources
References in the record
- fatpipeinc.com/support/cve-list.php
- ic3.gov/Media/News/2021/211117-2.pdf
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27860
And 2 more references. See all after sign-in
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