Vulnerability · Published Nov 1, 2026 · Assigned by VulDB
CVE-2026-120189D-Link DIR-505 TFTP Upload Filename tftpd mp_upload_file stack-based overflow
Critical 10.0
In plain English
A critical-severity stack buffer overflow in DIR-505 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 72% of all known vulnerabilities).
Severity (CVSS 3.1)10.0Critical
Exploit odds (30 days)1.3%top 28.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: 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
References
- VDB-429528 | D-Link DIR-505 TFTP Upload Filename tftpd mp_upload_file stack-based overflow vdb-entry, technical-description
- VDB-429528 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-120189 | CVE Analysis and Report third-party-advisory
- Submit #1027185 | D-Link DIR-505 1.10B02 Stack-based Buffer Overflow third-party-advisory
- https://github.com/Walnut1337/DIR-505_filename_rce/tree/main/poc exploit
- https://www.dlink.com/ product