What is CVE-2025-6931?

CVE-2025-6931 is a low-severity vulnerability in D-Link Dcs-6517, classified under Use of Insufficiently Random Values. CVSS score: 3.7/10. Published 2025-06-30.

How severe is CVE-2025-6931?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in D-Link Dcs-6517

CVE-2025-6931

A vulnerability classified as problematic was found in D-Link DCS-6517 and DCS-7517 up to 2.02.0. Affected by this vulnerability is the function generate_pass_from_mac of the file /bin/httpd of the component Root Password Generation Handler. The manipulation leads to insufficient entropy. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Published 2025-06-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.021 (80.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.021 · change: +0.004

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)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
cdn2.v50to.cc/dlink/DCS-6517B1_FW_v2.02.01/report_3.pdf (related, Exploit, Third Party Advisory)
cdn2.v50to.cc/dlink/DCS-7517_B1_FW_v2.02.01/report_1.pdf (Exploit, Third Party Advisory, exploit)
www.dlink.com/ (Product, product)

Frequently asked questions

What is CVE-2025-6931?: CVE-2025-6931 is a low-severity vulnerability in D-Link Dcs-6517, classified under Use of Insufficiently Random Values. CVSS score: 3.7/10. Published 2025-06-30.
How severe is CVE-2025-6931?: Low severity. CVSS v3 base score is 3.7 out of 10.