What’s Vulnerable › Vulnerabilities

CVE-2022-40740: Realtek GPON router - Command Injection

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-01-03 · updated 2026-06-17
• Weakness: CWE-78

Description

Realtek GPON router has insufficient filtering for special characters. A remote attacker authenticated as an administrator can exploit this vulnerability to perform command injection attacks, to execute arbitrary system command, manipulate system or disrupt service.

Affected products

• Realtek Usdk: 1.0, 2.0, 2.2
• Realtek Xpon Software Development Kit: 1.9, 3.3, 4.0, 4.1

References

• https://www.twcert.org.tw/tw/cp-132-6831-19121-1.html
• https://www.twcert.org.tw/tw/cp-132-6831-19121-1.html

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