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Exploited vulnerability · CISA KEV

Is CVE-2021-27860 exploited? Yes: in CISA KEV since 10 Jan 2022

Gociux · FatPipe WARP, IPVPN, and MPVPN software · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-27860, FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 10 Jan 2022, 33 days after it was published. It affects FatPipe WARP, IPVPN, and MPVPN software. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 10 Jan 2022
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity9.8CVSS 3.1 · critical
US federal due24 Jan 2022BOD 22-01 deadline

What it is

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.

VendorFatPipe (1 exploited CVE in KEV)
ProductWARP, IPVPN, and MPVPN software
VulnerabilityFatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit
WeaknessCWE-434
Published8 Dec 2021
Added to KEV10 Jan 2022
Reported by (CNA)certcc

What to do

  1. Check whether you run it. Look for WARP, IPVPN, and MPVPN software in your asset inventory, including appliances and cloud images. Stack check lists every exploited FatPipe CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 8 Dec 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for FatPipe.

References

Questions

Is CVE-2021-27860 being exploited?

Yes. CISA added CVE-2021-27860 to the Known Exploited Vulnerabilities catalog on 10 Jan 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-27860 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2021-27860?

Apply updates per vendor instructions. Check FatPipe's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected WARP, IPVPN, and MPVPN software and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in January 2022 · act-now radar.

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