PatchTheCVECVE-2021-27855: FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p91 and 10.2.2r42 allows a remote, authenti
CVE-2021-27855 is a high-severity flaw (CVSS 8.8) affecting ipvpn firmware, warp firmware, mpvpn firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p91 and 10.2.2r42 allows a remote, authenticated attacker with read-only privileges to grant themselves administrative privileges. Older versions of FatPipe software may also be vulnerable. The FatPipe advisory identifier for this vulnerability is FPSA001.
Why this priority
- High severity
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 1.7% (top 23%) |
| CISA exploited list | No |
| Weakness | CWE-862 |
| Published | 2021-12-15 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-27855?
ipvpn firmware: mitigate or apply the listed mitigation; warp firmware: mitigate or apply the listed mitigation; mpvpn firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2021-27855 being exploited?
CVE-2021-27855 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-27855 affect?
CVE-2021-27855 affects ipvpn firmware, warp firmware, mpvpn firmware. Severity is high (CVSS 8.8). FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p91 and 10.2.2r42 allows a remote, authenticated attacker with read-only privileges to grant themselves administrative privileges. Older versions of FatPipe software may als
How urgent is CVE-2021-27855?
Priority 50/100. High severity
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- CVE-2021-27856 CRITICAL 9.8 MITIGATE MITIGATE FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p91 and 10.2.2r42 includes an account named