Cyber Resilience

CVE-2023-38936

CriticalPublic PoC

Published: 07 August 2023

Published
07 August 2023
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0047 65.1th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-38936 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Tenda Ac10 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 34.9% 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 AC10 V1.0 V15.03.06.23, AC1206 V15.03.06.23, AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, AC5 V1.0 V15.03.06.28, FH1203 V2.0.1.6, AC9 V3.0 V15.03.06.42_multi and FH1205 V2.0.0.7(775) were discovered to contain a stack overflow via the speed_dir parameter in the formSetSpeedWan function.

CWE(s)
CWE-787

Related Threats

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

Affected Assets

tenda
ac10 firmware
15.03.06.23
tenda
ac1206 firmware
15.03.06.23
tenda
ac6 firmware
15.03.06.23
tenda
ac7 firmware
15.03.06.44
tenda
f1203 firmware
2.0.1.6
tenda
ac5 firmware
15.03.06.28
tenda
fh1203 firmware
2.0.1.6
tenda
fh1205 firmware
2.0.0.7\(775\)
tenda
ac9 firmware
15.03.06.42_multi

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