CVE-2021-27856
Last modified
CVE-2021-27856 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 5.60% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Fatpipeinc | Ipvpn Firmware | 5.2.0 | R34 |
| Fatpipeinc | Ipvpn Firmware | 6.1.2 | R70p26 |
| Fatpipeinc | Ipvpn Firmware | 7.1.2 | R39 |
| Fatpipeinc | Ipvpn Firmware | 9.1.2 | R129 |
| Fatpipeinc | Ipvpn Firmware | 10.1.2 | R60p10 |
| Fatpipeinc | Ipvpn Firmware | 10.2.2 | R10 |
| Fatpipeinc | Mpvpn Firmware | 5.2.0 | R34 |
| Fatpipeinc | Mpvpn Firmware | 6.1.2 | R70p26 |
| Fatpipeinc | Mpvpn Firmware | 7.1.2 | R39 |
| Fatpipeinc | Mpvpn Firmware | 9.1.2 | R129 |
| Fatpipeinc | Mpvpn Firmware | 10.1.2 | R60p10 |
| Fatpipeinc | Mpvpn Firmware | 10.2.2 | R10 |
| Fatpipeinc | Warp Firmware | 5.2.0 | R34 |
| Fatpipeinc | Warp Firmware | 6.1.2 | R70p26 |
| Fatpipeinc | Warp Firmware | 7.1.2 | R39 |
| Fatpipeinc | Warp Firmware | 9.1.2 | R129 |
| Fatpipeinc | Warp Firmware | 10.1.2 | R60p10 |
| Fatpipeinc | Warp Firmware | 10.2.2 | R10 |
References
- https://www.fatpipeinc.com/support/cve-list.phpVendor Advisory
- https://www.zeroscience.mk/codes/fatpipe_backdoor.txtThird Party Advisory
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5684.phpThird Party Advisory
- https://www.fatpipeinc.com/support/cve-list.phpVendor Advisory
- https://www.zeroscience.mk/codes/fatpipe_backdoor.txtThird Party Advisory
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5684.phpThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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