Cyber Resilience

CVE-2022-40740

HighRCE

Published: 03 January 2023

Published
03 January 2023
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0129 80.1th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-40740 is a high-severity OS Command Injection (CWE-78) vulnerability in Realtek Xpon Software Development Kit. Its CVSS base score is 7.2 (High).

Operationally, ranked in the top 19.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-78NVD-CWE-Other

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

realtek
usdk
1.0, 2.0, 2.2
realtek
xpon software development kit
1.9, 3.3, 4.0, 4.1

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References