CVE-2026-4499

HIGH

D-Link DIR-820LW SSDP ssdpcgi_main os command injection

Title source: cna

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.

References (6)

Core 6

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-352055 | D-Link DIR-820LW SSDP ssdpcgi_main os command injection

https://vuldb.com/?id.352055

Signature, Permissions Required signature permissions-required

VDB-352055 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/?ctiid.352055

Third Party Advisory third-party-advisory

Submit #773883 | D-Link DIR-820LW B2.03 OS Command Injection

https://vuldb.com/?submit.773883

Issue Tracking issue-tracking

https://github.com/yunleeeee/cve/issues/1

Exploit exploit

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

Product product

https://www.dlink.com/

Scores

CVSS v3 7.3

EPSS 0.0320

EPSS Percentile 86.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-77 CWE-78

Status published

Products (2)

D-Link/DIR-820LW 2.03

dlink/dir-820lw_firmware 2.03

Published Mar 20, 2026

Tracked Since Mar 21, 2026