VulnerabilityModified
CVE-2021-27171
An issue was discovered on FiberHome HG6245D devices through RP2613.
CRITICAL 9.8EPSS 17.8%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 17.8%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to start a Linux telnetd as root on port 26/tcp by using the CLI interface commands of ddd and shell (or tshell).
- 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
- 17.84% probability · 97th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- fiberhome/hg6245d firmware
- Source
- cve@mitre.org
References
- https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-cli-privilege-escalationExploit, Third Party Advisory
- https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-cli-privilege-escalationExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.