Cyber Resilience

CVE-2023-43520

High

Published: 06 February 2024

Published
06 February 2024
Modified
11 August 2025
KEV Added
Patch
CVSS Score v3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
EPSS Score 0.0027 50.4th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-43520 is a high-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Qualcomm Ar8035 Firmware. Its CVSS base score is 8.6 (High).

Operationally, ranked in the top 49.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Memory corruption when AP includes TID to link mapping IE in the beacons and STA is parsing the beacon TID to link mapping IE.

CWE(s)

Related Threats

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

Affected Assets

qualcomm
ar8035 firmware
all versions
qualcomm
fastconnect 6900 firmware
all versions
qualcomm
fastconnect 7800 firmware
all versions
qualcomm
flight rb5 5g platform firmware
all versions
qualcomm
qam8255p firmware
all versions
qualcomm
qam8650p firmware
all versions
qualcomm
qam8775p firmware
all versions
qualcomm
qamsrv1h firmware
all versions
qualcomm
qamsrv1m firmware
all versions
qualcomm
qca6391 firmware
all versions
+60 more product configuration(s) — see NVD for full list

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.

addresses: CWE-787

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

References