CVE-2020-12773: Realtek ADSL/PON Modem SoC - Security Misconfiguration

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-08 · updated 2026-06-17

Description

A security misconfiguration vulnerability exists in the SDK of some Realtek ADSL/PON Modem SoC firmware, which allows attackers using a default password to execute arbitrary commands remotely via the build-in network monitoring tool.

Affected products

Realtek Adsl Router Soc Firmware: all versions

References

https://www.twcert.org.tw/tw/cp-132-3681-2a3f6-1.html
https://www.twcert.org.tw/tw/cp-132-3681-2a3f6-1.html

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