CVE-2026-84388

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.37% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 31.4% of scored records. A rank, not a probability.

NVD base score

9.6 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-27.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-22 14:12Z1 MO AGO

Last updated

2026-09-26 23:12Z1 MO AGO

Reserved

2026-09-01

Assigning CNA

fortinet

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C

Weaknesses

• CWE-1021Improper Restriction of Rendered UI Layers or FramesBase

Data version

5.2

Document digest

a8a4f772e766250711e47f4885fa556749d3314b2e1c2d26c4a7db9ea3fb1686

• fortiguard.fortinet.comhttps://fortiguard.fortinet.com/psirt/FG-IR-26-168