CVE-2021-42912
CVSS v3
8.8
HIGH
EPSS Score
10.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
FiberHome ONU GPON AN5506-04-F RP2617 is affected by an OS command injection vulnerability. This vulnerability allows the attacker, once logged in, to send commands to the operating system as the root user via the ping diagnostic tool, bypassing the IP address field, and concatenating OS commands with a semicolon.
Technical details
- Published
- 2021-12-16
Frequently asked questions
What is CVE-2021-42912?
FiberHome ONU GPON AN5506-04-F RP2617 is affected by an OS command injection vulnerability. This vulnerability allows the attacker, once logged in, to send commands to the operating system as the root user via the ping diagnostic tool, bypassing the IP address field, and concatenating OS commands with a semicolon.
Is CVE-2021-42912 actively exploited?
Active exploitation of CVE-2021-42912 has not been confirmed. Its EPSS score was 10.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-42912?
CVE-2021-42912 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-42912 affecting your environment?
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