CVE-2026-118579 (CVSS 9.8)

Description

A weakness has been identified in D-Link DIR-505 1.10B02. The impacted element is the function main of the file /secmark1524.cgi of the component Web Management CGI. This manipulation of the argument accu/pass/code/hash/cmds causes backdoor. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

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CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-912 CWE-912

References

Other References

https://github.com/Walnut1337/DIR-505_backdoor/tree/main/poc https://vuldb.com/cve/CVE-2026-118579 https://vuldb.com/submit/1025351 https://vuldb.com/vuln/428018 https://vuldb.com/vuln/428018/cti https://www.dlink.com/

Frequently Asked Questions

What is CVE-2026-118579? +

A weakness has been identified in D-Link DIR-505 1.10B02. The impacted element is the function main of the file /secmark1524.cgi of the component Web Management CGI. This manipulation of the argument accu/pass/code/hash/cmds causes backdoor. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-118579? +

CVE-2026-118579 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

How do I check if I'm vulnerable to CVE-2026-118579? +

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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