CVE-2026-118579

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

High 10.0
A public exploit reference is listed

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.

Key facts

Published: 28 Oct 2026
Last changed: 29 Oct 2026
Assigned by: VulDB
EPSS: 0.787% likely to be exploited in the next 30 days, higher than 56.746% of CVEs (scores for 15 Nov 2026)
SSVC (CISA): Exploitation: poc; Automatable: yes; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

9.3CVSS 4.0, Criticalfrom the CNA (VulDB)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
9.8CVSS 3.1, Criticalfrom the CNA (VulDB)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
9.8CVSS 3.0, Criticalfrom the CNA (VulDB)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
10.0CVSS 2.0, Highfrom the CNA (VulDB)AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Vendor	Product	Versions
D-Link	DIR-505	1.10B02 (affected)

Timeline

28 Oct 2026 Advisory disclosed
28 Oct 2026 VulDB entry created
28 Oct 2026 VulDB entry last update
28 Oct 2026 Published

Weakness

CWE-912

References

VDB-428018 | D-Link DIR-505 Web Management CGI secmark1524.cgi main backdoorvdb-entrytechnical-description
VDB-428018 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-118579 | CVE Analysis and Reportthird-party-advisory
Submit #1025351 | D-Link DIR-505 1.10B02 Backdoorthird-party-advisory
github.comexploit
www.dlink.comproduct