CVE-2026-120189

D-Link DIR-505 TFTP Upload Filename tftpd mp_upload_file stack-based overflow

Critical 10.0
A public exploit reference is listed

Description

A vulnerability was identified in D-Link DIR-505 1.10B02. Affected is the function save_upload_file/mp_upload_file of the file /usr/bin/tftpd of the component TFTP Upload Filename Handler. The manipulation leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is publicly available and might be used.

Key facts

Published: 1 Nov 2026
Last changed: 5 Nov 2026
Assigned by: VulDB
EPSS: 1.346% likely to be exploited in the next 30 days, higher than 71.893% 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.

10.0CVSS 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:H/SI:H/SA:H/E:P
10.0CVSS 3.1, Criticalfrom the CNA (VulDB)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
10.0CVSS 3.0, Criticalfrom the CNA (VulDB)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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

31 Oct 2026 Advisory disclosed
31 Oct 2026 VulDB entry created
31 Oct 2026 VulDB entry last update
1 Nov 2026 Published

Weakness

References

VDB-429528 | D-Link DIR-505 TFTP Upload Filename tftpd mp_upload_file stack-based overflowvdb-entrytechnical-description
VDB-429528 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-120189 | CVE Analysis and Reportthird-party-advisory
Submit #1027185 | D-Link DIR-505 1.10B02 Stack-based Buffer Overflowthird-party-advisory
github.comexploit
www.dlink.comproduct