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CVE-2025-53608 is a stored cross-site scripting vulnerability in Fortinet FortiSandbox affecting versions 5.0.0 through 5.0.2, 4.4.0 through 4.4.7, 4.2 all versions, and 4.0 all versions. Available reporting further identifies the issue in the LDAP server option, including affected builds in the 4.4.6–5.0.2 range. The flaw results from improper neutralization of input during web page generation, allowing attacker-controlled content submitted through crafted requests to be stored by the application and later rendered in the administrative web interface. Because the vulnerable input is persisted and executed in a browser context, the issue enables script execution within the authenticated FortiSandbox management session of a user who views the malicious content.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.