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High severity7.2NVD Advisory· Published Jan 3, 2023· Updated Jun 17, 2026

CVE-2022-40740

CVE-2022-40740

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

9
  • Realtek/Usdk3 versions
    cpe:2.3:a:realtek:usdk:1.0:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:realtek:usdk:1.0:*:*:*:*:*:*:*
    • cpe:2.3:a:realtek:usdk:2.0:*:*:*:*:*:*:*
    • cpe:2.3:a:realtek:usdk:2.2:*:*:*:*:*:*:*
  • Realtek/Xpon Software Development Kit4 versions
    cpe:2.3:a:realtek:xpon_software_development_kit:1.9:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:a:realtek:xpon_software_development_kit:1.9:*:*:*:*:*:*:*
    • cpe:2.3:a:realtek:xpon_software_development_kit:3.3:*:*:*:*:*:*:*
    • cpe:2.3:a:realtek:xpon_software_development_kit:4.0:*:*:*:*:*:*:*
    • cpe:2.3:a:realtek:xpon_software_development_kit:4.1:*:*:*:*:*:*:*
  • Realtek/GPON routerllm-fuzzy2 versions
    (expand)+ 1 more
    • (no CPE)
    • (no CPE)range: SDK 1.9

Patches

Vulnerability mechanics

References

1

News mentions

0

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