What’s Vulnerable › Vulnerabilities
CVE-2021-27856: FatPipe software administrative account with no password
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 5.5% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-12-15 · updated 2026-06-17
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.
Affected products
- Fatpipeinc Ipvpn Firmware: 5.2.0-r34, 6.1.2-r70p26, 6.1.2-r70p45-m, 6.1.2-r70p75-m, 7.1.2-r39, 9.1.2-r129 (+30)
- Fatpipeinc Mpvpn Firmware: 5.2.0-r34, 6.1.2-r70p26, 6.1.2-r70p45-m, 6.1.2-r70p75-m, 7.1.2-r39, 9.1.2-r129 (+30)
- Fatpipeinc Warp Firmware: 5.2.0-r34, 6.1.2-r70p26, 6.1.2-r70p45-m, 6.1.2-r70p75-m, 7.1.2-r39, 9.1.2-r129 (+30)
References
- https://www.fatpipeinc.com/support/cve-list.php
- https://www.zeroscience.mk/codes/fatpipe_backdoor.txt
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5684.php
- https://www.fatpipeinc.com/support/cve-list.php
- https://www.zeroscience.mk/codes/fatpipe_backdoor.txt
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5684.php
Get alerted when CVE-2021-27856 or the next vulnerability affects your stack