CVE-2026-4499: D-Link DIR-820LW SSDP ssdpcgi_main os command injection

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-20 · updated 2026-06-17
Weakness: CWE-77

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

D-Link DIR-820LW: 2.03

References

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
https://github.com/yunleeeee/cve/issues/1
https://vuldb.com/?ctiid.352055
https://vuldb.com/?id.352055
https://vuldb.com/?submit.773883
https://www.dlink.com/

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