CVE-2021-27856

CRITICAL EXPLOITED NUCLEI

FatPipe <10.1.2r60p91, 10.2.2r42 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-27856 has been observed exploited in the wild (reported by VulnCheck KEV). A Nuclei detection template is also available.

Description

FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p91 and 10.2.2r42 includes an account named "cmuser" that has administrative privileges and no password. Older versions of FatPipe software may also be vulnerable. The FatPipe advisory identifier for this vulnerability is FPSA002.

Nuclei Templates (1)

FatPipe WARP/IPVPN/MPVPN - Backdoor Account
CRITICALVERIFIEDby gy741

References (3)

Core 3
Core References
Vendor Advisory x_refsource_confirm
https://www.fatpipeinc.com/support/cve-list.php
Third Party Advisory x_refsource_misc
https://www.zeroscience.mk/codes/fatpipe_backdoor.txt

Scores

CVSS v3 9.8
EPSS 0.0560
EPSS Percentile 91.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

VulnCheck KEV 2023-05-05
Status published
Products (10)
fatpipeinc/ipvpn_firmware 5.2.0 r34
fatpipeinc/ipvpn_firmware 6.1.2 r70p26 (3 CPE variants)
fatpipeinc/ipvpn_firmware 7.1.2 r39
fatpipeinc/ipvpn_firmware 9.1.2 r129 (17 CPE variants)
fatpipeinc/ipvpn_firmware 10.1.2 r60p10 (11 CPE variants)
fatpipeinc/ipvpn_firmware 10.2.2 r10 (3 CPE variants)
fatpipeinc/mpvpn_firmware 5.2.0 r34
fatpipeinc/mpvpn_firmware 6.1.2 r70p26 (3 CPE variants)
fatpipeinc/mpvpn_firmware 7.1.2 r39
fatpipeinc/mpvpn_firmware 9.1.2 r129 (9 CPE variants)
Published Dec 15, 2021
Tracked Since Feb 18, 2026