Cyber Resilience

CVE-2022-40861

HighPublic PoC

Published: 23 September 2022

Published
23 September 2022
Modified
22 May 2025
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 0.0048 65.4th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-40861 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Tenda Ac18 Firmware. Its CVSS base score is 7.2 (High).

Operationally, ranked in the top 34.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Tenda AC18 router V15.03.05.19 contains a stack overflow vulnerability in the formSetQosBand->FUN_0007db78 function with the request /goform/SetNetControlList/

CWE(s)
CWE-787

Related Threats

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

Affected Assets

tenda
ac18 firmware
15.03.05.19\(6318\)

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.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References