CVE-2021-27855: FatPipe software allows privilege escalation
- Is it exploited?
Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .
VulnCheck KEV lists it since . It cites 440 public reports, the first from .
- How likely is exploitation in the next 30 days?
- 1.7%
EPSS score, percentile 76.5 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 8.8 High
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- from 10.1 to before 10.1.2r60p91
- from 10.2 to before 10.2.2r42
- from 10.1 to before 10.1.2r60p91
- from 10.2 to before 10.2.2r42
- from 10.1 to before 10.1.2r60p91
- from 10.2 to before 10.2.2r42
Source: CISA KEV 2026.10.29, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
Description
FatPipe software allows privilege escalation
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.
Source: CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
Versions by product, as listed in the CVE record (3 products)
| Status | Versions |
|---|---|
| Affected | from 10.1 to before 10.1.2r60p91 |
| Affected | from 10.2 to before 10.2.2r42 |
| Status | Versions |
|---|---|
| Affected | from 10.1 to before 10.1.2r60p91 |
| Affected | from 10.2 to before 10.2.2r42 |
| Status | Versions |
|---|---|
| Affected | from 10.1 to before 10.1.2r60p91 |
| Affected | from 10.2 to before 10.2.2r42 |
Source: CVE List, as of . About the data.
Weakness
CWE-862
- CWE-862: Missing Authorization
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
References
3
Known exploited FatPipe vulnerabilities
- CVE-2021-27860: FatPipe WARP, IPVPN, and MPVPN Configuration Upload exploit