CVE-2025-55848: dir-823x Command Injection — Exploit

Description

An issue was discovered in DIR-823 firmware 20250416. There is an RCE vulnerability in the set_cassword settings interface, as the http_casswd parameter is not filtered by '&'to allow injection of reverse connection commands.

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CVSS v3.1 Score

8.8

HIGH

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

Weakness Type (CWE)

CWE-77 CWE-77

Affected Products

Vendor	Product	Versions
dlink	dir-823x_firmware	All
dlink	dir-823x	All

References

Exploits

https://github.com/meigui637/iot_zone/blob/main/%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E.md

Other References

https://www.dlink.com/en/security-bulletin/

Frequently Asked Questions

What is CVE-2025-55848? +

An issue was discovered in DIR-823 firmware 20250416. There is an RCE vulnerability in the set_cassword settings interface, as the http_casswd parameter is not filtered by '&'to allow injection of reverse connection commands. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-55848? +

CVE-2025-55848 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-55848? +

CVE-2025-55848 affects products from dlink, specifically: dir-823x, dir-823x_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-55848? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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