CVE-2026-35616KEV · OVERDUECWE-284

Fortinet FortiClient EMS Improper Access Control Vulnerability

Critical · published April 4, 2026

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.1. It is confirmed in active exploitation. It sits in the 99.8th percentile for exploit probability.

198
days past CISA
deadline
CVSS v3.1
9.1
EPSS
94%
Percentile
99.8
In the wild
Confirmed
What it is

A improper access control vulnerability in Fortinet FortiClientEMS 7.4.5 through 7.4.6 may allow an unauthenticated attacker to execute unauthorized code or commands via crafted requests.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.93983 · 99.8th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-04-04T00:38Z
KEV added
2026-04-06 · due 2026-04-09
EPSS history
Timeline
  • 23 OCT 03:59Z
    EPSS moved 9% → 94%
    epss
  • 22 OCT 03:32Z
    EPSS moved 9% → 94%
    epss
  • 25 SEP 03:25Z
    EPSS moved 91% → 9%
    epss
  • 06 APR 00:00Z
    Added to CISA KEV — remediate by Apr 9
    kev
  • 04 APR 00:38Z
    A improper access control vulnerability in Fortinet FortiClientEMS 7.4.5 through 7.4.6 may allow an unauthenticated attacker to execute unauthorized code or…
    cvelistv5