Vulnerability · Published Mar 20, 2026 · Assigned by VulDB
CVE-2026-4499D-Link DIR-820LW SSDP ssdpcgi_main os command injection
High 7.3
In plain English
A high-severity OS command injection in DIR-820LW from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.7% (higher than 90% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)3.7%top 10.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was determined in D-Link DIR-820LW 2.03. Affected is the function ssdpcgi_main of the component SSDP. Executing a manipulation can lead to os command injection. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
Affected products (as reported)
Weakness: CWE-78, CWE-77 · 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-352055 | D-Link DIR-820LW SSDP ssdpcgi_main os command injection vdb-entry, technical-description
- VDB-352055 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #773883 | D-Link DIR-820LW B2.03 OS Command Injection third-party-advisory
- https://github.com/yunleeeee/cve/issues/1 issue-tracking
- https://github.com/user-attachments/files/25790888/OS.Command.Injection.in.D-Link.DIR-820LW.B2.03.via.the.HTTP_ST.environment.variable.in.ssdpcgi_main.function.zip exploit
- https://www.dlink.com/ product