What is CVE-2025-4343?

CVE-2025-4343 is a high-severity vulnerability in D-Link Dir-600l, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-05-06.

How severe is CVE-2025-4343?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in D-Link Dir-600l

CVE-2025-4343

A vulnerability has been found in D-Link DIR-600L up to 2.07B01 and classified as critical. This vulnerability affects the function formEasySetupWizard. The manipulation of the argument host leads to buffer overflow. The attack can be initiated remotely. This vulnerability only affects products that are no longer supported by the maintainer.

Vulnerability class: Buffer Overflow

Published 2025-05-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: +0.000

Affected products

Weakness classification (CWE)

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/jylsec/vuldb/blob/main/D-Link/dlink_dir600l/Buffer_overflow-formEasy… (related, Broken Link)
www.dlink.com/ (Product, product)

Frequently asked questions

What is CVE-2025-4343?: CVE-2025-4343 is a high-severity vulnerability in D-Link Dir-600l, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-05-06.
How severe is CVE-2025-4343?: High severity. CVSS v3 base score is 8.8 out of 10.