CVE-2021-27860: FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit
Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-13a28248fea1, updated 2026-11-02T23:39:54.475Z.
CISA Known Exploited Vulnerabilities
- Name
- FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit
- Vendor
- FatPipe
- Product
- WARP, IPVPN, and MPVPN software
- Added to the catalog
- 2022-01-10
- Due date for US federal agencies
- 2022-01-24
- Weaknesses
- CWE-434
- Catalog version
- 2026.10.30
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 (CISA)
Apply updates per vendor instructions.
Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.
Links in CISA's notes
Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
NVD analysis
- Status
- Analyzed
- Published
- 2021-12-08T17:15:10.800
- Last modified
- 2026-06-17T03:45:32.300
- Weaknesses
- CWE-434
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.
| Metric | Score | Severity | Vector | Scored by |
|---|---|---|---|---|
| CVSS 3.1 | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | [email protected] (Secondary) |
| CVSS 3.1 | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | [email protected] (Primary) |
| CVSS 2.0 | 9.3 | HIGH | AV:N/AC:M/Au:N/C:C/I:C/A:C | [email protected] (Primary) |
References
- https://www.fatpipeinc.com/support/cve-list.php (Vendor Advisory)
- https://www.ic3.gov/Media/News/2021/211117-2.pdf (Exploit, Mitigation, Third Party Advisory, US Government Resource)
- https://www.fatpipeinc.com/support/cve-list.php (Vendor Advisory)
- https://www.ic3.gov/Media/News/2021/211117-2.pdf (Exploit, Mitigation, Third Party Advisory, US Government Resource)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27860 (US Government Resource)
This product uses the NVD API but is not endorsed or certified by the NVD.
Read on 2026-11-02T23:41:59.479Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-27860
CVE record
- Title (CNA)
- Arbitrary file upload vulnerability in FatPipe software
- Assigner
- certcc
- State
- PUBLISHED
- Published
- 2021-12-08T16:15:48.319Z
- Updated
- 2025-10-21T23:25:23.273Z
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.
References
Read on 2026-11-03T01:07:09.039Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2021/27xxx/CVE-2021-27860.json
Defensive techniques (MITRE D3FEND)
D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.
CWE-434: Unrestricted Upload of File with Dangerous Type
- Harden: Software Update (acts on Software)
- Restore: Restore Software (acts on Software)
- Harden: Credential Scrubbing (acts on Subroutine)
- Harden: Variable Initialization (acts on Subroutine)
- Harden: Trusted Library (acts on Subroutine)
- Harden: Domain Logic Validation (acts on Subroutine)
- Isolate: Application-based Process Isolation (acts on Subroutine)
- Model: Software Inventory (acts on Software)
- Model: Asset Vulnerability Enumeration (acts on Software)
D3FEND ontology version 1.6.0.
Read on 2026-11-02T23:56:37.096Z under licence d3fend-terms-of-use@f98cbc7e from https://d3fend.mitre.org/api/weakness/cwe/CWE-434.json
MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/
Sources and licences
CISA
Source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30, CC0 1.0. Use of this data does not imply endorsement by CISA or DHS.
National Vulnerability Database (NIST)
This product uses the NVD API but is not endorsed or certified by the NVD.
NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)
CVE Program, The MITRE Corporation
Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation. CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
MITRE D3FEND
MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/MITRE D3FEND Terms of Use (site + knowledge graph); source repo MIT
Cite this page
Dragons Eye Ransomware Tracker, "CVE-2021-27860: FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit",
entity page, dataset version ref-13a28248fea1, updated 2026-11-02T23:39:54.475Z,
https://ransomware-tracker.com/cve/CVE-2021-27860 (accessed 2026-11-03).
Underlying source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30.
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-06-17T03:45:32.300.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2025-10-21T23:25:23.273Z.
Underlying source: MITRE D3FEND, ontology version 1.6.0.
Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.