CVE-2025-1103: dir-823x Null Dereference — Exploit

Description

A vulnerability, which was classified as problematic, was found in D-Link DIR-823X 240126/240802. This affects the function set_wifi_blacklists of the file /goform/set_wifi_blacklists of the component HTTP POST Request Handler. The manipulation of the argument macList leads to null pointer dereference. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-404 CWE-404

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
dlink	dir-823x_firmware	All
dlink	dir-823x_firmware	All
dlink	dir-823x	All

References

Exploits

https://tasty-foxtrot-3a8.notion.site/D-link-DIR-823X-set_wifi_blacklists-Vulnerability-1870448e619580e5bf09cf628692f7a9?pvs=73 https://tasty-foxtrot-3a8.notion.site/D-link-DIR-823X-set_wifi_blacklists-Vulnerability-1870448e619580e5bf09cf628692f7a9

Other References

https://vuldb.com/?ctiid.294933 https://vuldb.com/?id.294933 https://vuldb.com/?submit.489603 https://www.dlink.com/

Frequently Asked Questions

What is CVE-2025-1103? +

A vulnerability, which was classified as problematic, was found in D-Link DIR-823X 240126/240802. This affects the function set_wifi_blacklists of the file /goform/set_wifi_blacklists of the component HTTP POST Request Handler. The manipulation of the argument macList leads to null pointer dereference. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-1103? +

CVE-2025-1103 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-1103? +

CVE-2025-1103 affects products from dlink, specifically: dir-823x, dir-823x_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-1103? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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