CVE-2026-118579

CRITICAL 9.8

D-Link DIR-505 Web Management CGI secmark1524.cgi main backdoor

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-912
Vendor	d-link
Product	dir-505
Published	Oct 28, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

D-Link / DIR-505

1.10B02

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 Walnut1337 (VulDB User)