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CVE-2021-27857: FatPipe software allows unauthenticated configuration download

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-15 · updated 2026-06-17
• Weakness: CWE-862

Description

A missing authorization vulnerability in the web management interface of FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p91 and 10.2.2r42 allows a remote, unauthenticated attacker to download a configuration archive. The attacker needs to know or correctly guess the hostname of the target system since the hostname is used as part of the configuration archive file name. Older versions of FatPipe software may also be vulnerable. The FatPipe advisory identifier for this vulnerability is FPSA003.

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_configdl.txt
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5683.php
• https://www.fatpipeinc.com/support/cve-list.php
• https://www.zeroscience.mk/codes/fatpipe_configdl.txt
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5683.php

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