Affects widely-used Fortinet FortiClient EMS; unauthenticated RCE via crafted requests; CVSS 9.8; actively exploited per CISA KEV.
CVE-2026-35616
Unauthenticated RCE on FortiClient EMS via crafted requests.
Is CVE-2026-35616 being exploited?
Yes. CVE-2026-35616 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2026-35616?
CVE-2026-35616 is rated Critical with a CVSS score of 9.8. 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-2026-35616?
Yes. A fix has been recorded for CVE-2026-35616. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-35616 affect?
CVE-2026-35616 affects Fortinet FortiClient EMS 7.4.5–7.4.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-35616?
Apply vendor mitigations; upgrade to patched EMS when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated code/command execution via crafted requests; could fully compromise EMS and managed endpoints.
Immediate action required
- affected>= 7.4.5 and <= 7.4.6
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.