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THREATINT
PUBLISHED

CVE-2025-6931

D-Link DCS-6517/DCS-7517 Root Password Generation httpd generate_pass_from_mac entropy



Description

EN DE

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.

In D-Link DCS-6517 and DCS-7517 bis 2.02.0 wurde eine problematische Schwachstelle entdeckt. Dabei geht es um die Funktion generate_pass_from_mac der Datei /bin/httpd der Komponente Root Password Generation Handler. Durch Manipulieren mit unbekannten Daten kann eine insufficient entropy-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs kann dabei über das Netzwerk erfolgen. Die Komplexität eines Angriffs ist eher hoch. Sie gilt als schwierig ausnutzbar. Der Exploit steht zur öffentlichen Verfügung.

Reserved 2025-06-30 | Published 2025-06-30 | Updated 2025-06-30 | Assigner VulDB


MEDIUM: 6.3CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
LOW: 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
2.6AV:N/AC:H/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:UR

Problem types

Insufficient Entropy

Insufficiently Random Values

Product status

2.02
affected

2.02
affected

Timeline

2025-06-30:Advisory disclosed
2025-06-30:VulDB entry created
2025-06-30:VulDB entry last update

Credits

CookedMelon (VulDB User) reporter

References

vuldb.com/?id.314443 (VDB-314443 | D-Link DCS-6517/DCS-7517 Root Password Generation httpd generate_pass_from_mac entropy) vdb-entry technical-description

vuldb.com/?ctiid.314443 (VDB-314443 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.605592 (Submit #605592 | dlink DCS-6517B1 below or equal v2.02.01 hardcode weak password) third-party-advisory

vuldb.com/?submit.605593 (Submit #605593 | dlink DCS-7517B1 below or equal v2.02.01 predictable weak password (Duplicate)) third-party-advisory

vuldb.com/?submit.605596 (Submit #605596 | dlink DCS-7517B1 below or equal v2.02.01 hardcode weak password (Duplicate)) third-party-advisory

cdn2.v50to.cc/dlink/DCS-6517B1_FW_v2.02.01/report_3.pdf related

cdn2.v50to.cc/dlink/DCS-7517_B1_FW_v2.02.01/report_1.pdf exploit

www.dlink.com/ product

cve.org (CVE-2025-6931)

nvd.nist.gov (CVE-2025-6931)

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