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Vulnerability record · CVE-2025-13189 · published 15 November 2025

CVE-2025-13189: Dlink dir-816l firmware memory buffer overflow vulnerability

Dlink · Dir 816l Firmware

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.

7.4 CVSS 4.0 High EPSS 0.90% · top 42.0% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
7.4CVSS 4.0 base score, v2 9.0
0.90%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/scanleale/IOT_sec/blob/main/DIR-816L%20stack%20overflow(gena.cgi).pdf ExploitThird Party Advisory
https://vuldb.com/?ctiid.332478 Permissions RequiredVDB Entry
https://vuldb.com/?id.332478 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.685540 Third Party AdvisoryVDB Entry
https://www.dlink.com/ Product
https://github.com/scanleale/IOT_sec/blob/main/DIR-816L%20stack%20overflow(gena.cgi).pdf ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-28956Dlink dir-816l firmware vulnerabilityAn issue in the getcfg.php component of D-Link DIR816L_FW206b01 allows attackers to access the device via a crafted payload.EPSS 23%9.8CVE-2020-15893Dlink dir-816l firmware os command injection vulnerabilityAn issue was discovered on D-Link DIR-816L devices 2.x before 1.10b04Beta02. Universal Plug and Play (UPnP) is enabled by default on port 1900. An at…EPSS 21%8.9CVE-2025-13188Dlink dir-816l firmware memory buffer overflow vulnerabilityA vulnerability was detected in D-Link DIR-816L 2_06_b09_beta. Affected by this vulnerability is the function authenticationcgi_main of the file /aut…EPSS 2.4%7.5CVE-2022-28955Dlink dir-816l firmware improper authentication vulnerabilityAn access control issue in D-Link DIR816L_FW206b01 allows unauthenticated attackers to access folders folder_view.php and category_view.php.EPSS 40%7.5CVE-2020-15894Dlink dir-816l firmware missing authentication for critical function vulnerabilityAn issue was discovered on D-Link DIR-816L devices 2.x before 1.10b04Beta02. There exists an exposed administration function in getcfg.php, which can…EPSS 1.7%7.5CVE-2019-7642Dlink dir-817lw firmware missing authentication for critical function vulnerabilityD-Link routers with the mydlink feature have some web interfaces without authentication requirements. An attacker can remotely obtain users' DNS quer…EPSS 2.6%7.4CVE-2025-13190Dlink dir-816l firmware memory buffer overflow vulnerabilityA vulnerability was found in D-Link DIR-816L 2_06_b09_beta. This vulnerability affects the function scandir_main of the file /portal/__ajax_exporer.s…EPSS 0.82%7.4CVE-2025-13191Dlink dir-816l firmware memory buffer overflow vulnerabilityA vulnerability was determined in D-Link DIR-816L 2_06_b09_beta. This issue affects the function soapcgi_main of the file /soap.cgi. This manipulatio…EPSS 0.90%

Source: NIST National Vulnerability Database (record CVE-2025-13189), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.