CVE-2026-84386: fortinet forticlientwindows Unverified Ownership
CVSS: 5.1v3.1MediumAwaiting analysis
Published 08-09-2026Last modified 05-10-2026
Vulnerability summary
CVE-2026-84386 is a medium (CVSS 5.1) Unverified Ownership vulnerability in fortinet forticlientwindows. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.2% of scored vulnerabilities.
CVSS score
5.1/10
010
Medium · v3.1 (NVD)EPSS score
0.14%
0%100%
Low · +0.04 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 08-09-2026PublishedVulnerability first disclosed.
- 05-10-2026Last modifiedVulnerability information updated.
Description
A unverified ownership vulnerability in Fortinet FortiClientWindows 7.4.0 through 7.4.7, FortiClientWindows 7.2 all versions may allow attacker to improper access control via via an exposed minifilter communication port.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 5.1Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:HSources2 sources · 4.7–5.1
- CVE.orgCNA4.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H/E:P/RL:O/RC:CDiffers
EPSS trend
Probability
0.14%
Chance of exploitation in the next 30 days
Percentile
3%
Versus all other CVEs
30-day change
+0.04 pp
From 0.10% on 21-09-2026
21-09-202621-10-2026
EPSS score0.14%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Fortinet1 product
- forticlientwindows≥ 7.4.0, ≤ 7.4.7 | ≥ 7.2.0, ≤ 7.2.15
1 vendor · 1 product