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CVE-2021-40859

CriticalPublished

Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers with access to the web based management application full...

Published: Dec 7, 2021
Updated: Aug 4, 2024
Assigning CNA: mitre
Evidence observed: Dec 6, 2021

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

72.0%

High · next 30 days

Percentile: 99.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Backdoors were discovered in Auerswald COMpact 5500R 7.8A and 8.0B devices, that allow attackers with access to the web based management application full administrative access to the device.

Sources

CVE-2021-40859Exploit
Auerswald COMpact 8.0B Backdoors exploit
CVE-2021-40859PoC
Auerswald VoIP System Secret Backdoors -PoC
Auerswald COMpact 8.0B - Multiple BackdoorsExploit
RedTeam Pentesting GmbH · hardware · Dec 6, 2021

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