Vulnerability · Published Jul 21, 2026 · Assigned by VulDB
CVE-2026-16331D-Link DNS-320 save_ajax.php unrestricted upload
High 7.3
In plain English
A high-severity unrestricted file upload in DNS-320 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.6%top 24.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A security vulnerability has been detected in D-Link DNS-320 1.0.2. This affects an unknown function of the file /web/function/save_ajax.php. Such manipulation of the argument Malicious Handler leads to unrestricted upload. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.
Affected products (as reported)
Weakness: CWE-434, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-380697 | D-Link DNS-320 save_ajax.php unrestricted upload vdb-entry, technical-description
- VDB-380697 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-16331 | CVE Analysis and Report third-party-advisory
- Submit #858464 | D-Link (Shanghai)Limited Corp. D-Link DNS32 1.0.2 CWE-434 (Unrestricted Upload of File with Dangerous Type) third-party-advisory
- https://ucn9h68n9289.feishu.cn/docx/UZ6id3F1Joqlpxxn3NFcL8r7nHb?from=from_copylink exploit
- https://www.dlink.com/ product