CVE-2021-40859
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 72.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 71.98% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · first 6 December 2021
- CISA KEV
- Not listed
- Affected
- auerswald/compact 5500r firmware
- Source
- cve@mitre.org
EPSS 72.0% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analysesThird Party Advisory
- https://www.redteam-pentesting.de/en/advisories/rt-sa-2021-007/-auerswald-compact-multiple-backdoorsExploit, Third Party Advisory
- https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analysesThird Party Advisory
- https://www.redteam-pentesting.de/en/advisories/rt-sa-2021-007/-auerswald-compact-multiple-backdoorsExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.