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PatchSiren cyber security CVE debrief

CVE-2021-27860 FatPipe CVE debrief

CVE-2021-27860 is a FatPipe vulnerability CISA lists in its Known Exploited Vulnerabilities catalog as a "Configuration Upload exploit." Because it is in KEV, defenders should treat it as an active risk and prioritize vendor-recommended updates. CISA added it on 2022-01-10 and set a remediation due date of 2022-01-24.

Vendor
FatPipe
Product
WARP, IPVPN, and MPVPN software
CVSS
CRITICAL 9.8
CISA KEV
Listed
Original CVE published
2022-01-10
Original CVE updated
2022-01-10
Advisory published
2022-01-10
Advisory updated
2022-01-10

Who should care

Administrators and security teams responsible for FatPipe WARP, IPVPN, and MPVPN software should prioritize this immediately, especially in environments where the software is externally reachable or plays a critical network role.

Technical summary

The supplied corpus identifies the issue only as a FatPipe "Configuration Upload exploit" affecting WARP, IPVPN, and MPVPN software. The authoritative data provided here does not include deeper technical details such as the underlying flaw, attack prerequisites, or impact. What is clear from the CISA KEV entry is that the vulnerability is known to be exploited and should be remediated per vendor instructions.

Defensive priority

Immediate / High — CISA’s KEV listing signals known exploitation, and the catalog assigns a 14-day remediation window (2022-01-10 to 2022-01-24).

Recommended defensive actions

  • Apply updates per vendor instructions as directed by CISA.
  • Confirm whether any FatPipe WARP, IPVPN, or MPVPN deployments exist in your environment.
  • Prioritize remediation for externally exposed or operationally critical instances.
  • Validate remediation using vendor guidance and internal asset records.

Evidence notes

CISA’s KEV JSON entry lists CVE-2021-27860 for FatPipe WARP, IPVPN, and MPVPN software, names the issue a "Configuration Upload exploit," and records dateAdded 2022-01-10, dueDate 2022-01-24, and requiredAction "Apply updates per vendor instructions." The corpus also references the official NVD CVE detail page and CVE.org record. No CVSS score or severity is included in the supplied data.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-27860 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-27860

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-27860 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-27860

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.