CVE-2025-52436
Unauthenticated XSS may enable command execution on FortiSandbox.
Is CVE-2025-52436 being exploited?
Not confirmed. CVE-2025-52436 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 6.5% probability of exploitation in the next 30 days.
How severe is CVE-2025-52436?
CVE-2025-52436 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2025-52436?
Yes. A fix has been recorded for CVE-2025-52436. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-52436 affect?
CVE-2025-52436 affects Fortinet FortiSandbox 4.0.x, Fortinet FortiSandbox 4.2.x, Fortinet FortiSandbox 4.4.x, Fortinet FortiSandbox 5.0.x. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-52436?
Upgrade to fixed FortiSandbox firmware as soon as possible
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can execute commands on the FortiSandbox appliance via crafted requests, risking full device compromise.
Patch when possible
- affected>= 5.0.0 and <= 5.0.1
- affected>= 4.4.0 and <= 4.4.7
- affected>= 4.2.1 and <= 4.2.8
- affected>= 4.0.0 and <= 4.0.6
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.