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CVE-2021-42912

HIGH
8.8
CVSS Score
Published: December 16, 2021 at 04:54 PM UTC
Updated: July 9, 2026 at 01:17 AM UTC
12 products affected across 1 vendorAn5506-01-a FirmwareAn5506-04-f FirmwareAn5506-02-b Firmware

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Severity
HIGH8.8
Exploit prediction
EPSS 10%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Aan5506-04-g2g Firmware· Fiberhome
95%
rp2560
fiberhome-an5506-04-g2g (environment)
An5506-01-a Firmware· Fiberhome
95%
rp0509
fiberhome-an5506-01-a (same device)
An5506-01-b Firmware· Fiberhome
95%
rp2610
fiberhome-an5506-01-b (same device)
An5506-02-b Firmware· Fiberhome
95%
rp2520rp2521rp2603
fiberhome-an5506-02-b (same device)
An5506-04-b Firmware· Fiberhome
95%
rp2510
fiberhome-an5506-04-b (same device)
An5506-04-f Firmware· Fiberhome
95%
rp2617
fiberhome-an5506-04-f (same device)
An5506-01-A· Fiberhomedevice
80%
All versions
An5506-01-B· Fiberhomedevice
80%
All versions
An5506-02-B· Fiberhomedevice
80%
All versions
An5506-04-B· Fiberhomedevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Source: [email protected]
http://fiberhome.com
Source: [email protected]
http://onu.com
Source: [email protected]
https://medium.com/%40windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2
Source: cverecord
https://medium.com/@windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-78

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