What is CVE-2023-43203?

CVE-2023-43203 is a critical-severity vulnerability in Dlink Dwl-6610ap, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-09-20.

How severe is CVE-2023-43203?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Dlink Dwl-6610ap

CVE-2023-43203

D-LINK DWL-6610 FW_v_4.3.0.8B003C was discovered to contain a stack overflow vulnerability in the function update_users.

Vulnerability class: Buffer Overflow

Published 2023-09-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.1th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.009 · change: +0.001

Affected products

Dlink Dwl-6610ap
Dlink Dwl-6610ap Firmware — versions 4.3.0.8b003c

Weakness classification (CWE)

References

github.com/Archerber/bug_submit/blob/main/D-Link/DWL-6610/bug1.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-43203?: CVE-2023-43203 is a critical-severity vulnerability in Dlink Dwl-6610ap, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-09-20.
How severe is CVE-2023-43203?: Critical severity. CVSS v3 base score is 9.8 out of 10.