What is CVE-2023-43862?

CVE-2023-43862 is a high-severity vulnerability in Dlink Dir-619l, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2023-09-28.

How severe is CVE-2023-43862?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Dlink Dir-619l

CVE-2023-43862

D-Link DIR-619L B1 2.02 is vulnerable to Buffer Overflow via formLanguageChange function.

Vulnerability class: Buffer Overflow

Published 2023-09-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.2th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.2% 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: +0.002

Affected products

Dlink Dir-619l — versions b1
Dlink Dir-619l Firmware — versions 2.02

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.dlink.com/en/security-bulletin/ (Vendor Advisory)
github.com/YTrick/vuln/blob/main/DIR-619L Buffer Overflow_1.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-43862?: CVE-2023-43862 is a high-severity vulnerability in Dlink Dir-619l, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2023-09-28.
How severe is CVE-2023-43862?: High severity. CVSS v3 base score is 7.5 out of 10.