CVE-2025-13189: dir-816l Buffer Overflow — Exploit

Description

A vulnerability has been found in D-Link DIR-816L 2_06_b09_beta. This affects the function genacgi_main of the file gena.cgi. The manipulation of the argument SERVER_ID/HTTP_SID leads to stack-based buffer overflow. The attack is possible to be carried out remotely. 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.

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CVSS v3.1 Score

8.8

HIGH

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

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
dlink	dir-816l_firmware	All
dlink	dir-816l	All

References

Exploits

https://github.com/scanleale/IOT_sec/blob/main/DIR-816L%20stack%20overflow(gena.cgi).pdf https://github.com/scanleale/IOT_sec/blob/main/DIR-816L%20stack%20overflow(gena.cgi).pdf

Other References

https://vuldb.com/?ctiid.332478 https://vuldb.com/?id.332478 https://vuldb.com/?submit.685540 https://www.dlink.com/

Frequently Asked Questions

What is CVE-2025-13189? +

A vulnerability has been found in D-Link DIR-816L 2_06_b09_beta. This affects the function genacgi_main of the file gena.cgi. The manipulation of the argument SERVER_ID/HTTP_SID leads to stack-based buffer overflow. The attack is possible to be carried out remotely. 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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-13189? +

CVE-2025-13189 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-13189? +

CVE-2025-13189 affects products from dlink, specifically: dir-816l, dir-816l_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-13189? +

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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