Stored XSS via unauthenticated HTML upload in Samsung MagicINFO 9 Server (< 21.1090.1)
CVE-2026-25200 is an HTML file upload vulnerability in Samsung MagicInfo9 (MagicINFO 9) Server affecting versions prior to 21.1090.1. The application permits uploading HTML content in a way that results in stored cross-site scripting (XSS): attacker-supplied script embedded in the uploaded HTML is stored server-side and later executed in an administrator’s browser when the content is viewed via the MagicINFO management console. The supporting content characterizes the condition as an unauthenticated HTML upload leading to stored XSS and potential account takeover.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated HTML file upload issue in Samsung MagicInfo9 Server that results in stored XSS and can enable administrator session/credential theft and account takeover.
A vulnerability in Samsung MagicINFO 9 Server that allows HTML file upload without authentication, resulting in stored XSS and potential account takeover.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.