Stored script execution via unvalidated DDNS username
Published Jan 17, 2024 · Updated Jun 17, 2025
Stored XSS in the DDNS interface of Skyworth Digital CM5100 4.1.1.24 and earlier allows remote authenticated users to execute script. The web interface accepts the DDNS Username value without sufficient validation, stores the crafted input, and later places it into page content. Exploitation requires high-privileged access to submit the value and user interaction to render it; the script can read or alter data in the victim's router session.
Summary
What happened
Stored XSS in the DDNS interface of Skyworth Digital CM5100 4.1.1.24 and earlier allows remote authenticated users to execute script. The web interface accepts the DDNS Username value without sufficient validation, stores the crafted input, and later places it into page content. Exploitation requires high-privileged access to submit the value and user interaction to render it; the script can read or alter data in the victim's router session.
The record
- CVE
- CVE-2023-51729
- Published
- Jan 17, 2024
- Updated
- Jun 17, 2025
- Vendor
- Skyworth Digital
- Product
- CM5100
- Classifications
- CWE-79, CAPEC-592, T1059.007
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jan 17, 2024CVE publishedPublication date reported by the CVE source.
- Jun 17, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=4.1.1.24
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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