CVE-2026-84393
📛 CVE Title
CVE-2026-84393
Description
A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6, FortiProxy 7.6.2 through 7.6.6 may allow attacker to information disclosure via <insert attack vector here>
Overview
- State
- PUBLISHED
- Assigner (CNA)
- fortinet
- CVSS severity
- HIGH
- CVSS score
- 7.3 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C- Effective score
- 7.3 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-297 - Reserved
- 2026-09-01
- Published
- 2026-09-08 16:41 UTC
- Last updated
- 2026-09-08 17:30 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/84xxx/CVE-2026-84393.json
- Linked Threat
- CVE-2026-84393 — CVE-2026-84393
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-09-08 17:18:37 UTC
- NVD last modified
- 2026-09-08 18:35:10 UTC
- NVD CVSS v3.1
- 8.1 / 10 HIGH source: psirt@fortinet.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 2.2 / 10
- Impact subscore
- 5.9 / 10
NVD / KEV / EPSS data refreshed 2026-09-09 10:18 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-72927 - Assigner
- fortinet
- Published
- Sep 8, 2026, 4:41:49 PM
- Updated
- Sep 8, 2026, 5:30:49 PM
- EUVD base score (CVSS 3.1)
-
7.3 / 10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C - EUVD-reported EPSS
- 0.0000
- Vendors
- Fortinet
- Products
-
FortiOS (7.6.1 ≤7.6.6)FortiProxy (7.6.2 ≤7.6.6)
- Aliases
-
GHSA-7mc8-g97x-qg4j
ENISA description: A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6, FortiProxy 7.6.2 through 7.6.6 may allow attacker to information disclosure via <insert attack vector here>
EUVD references (1)
Affected products (2)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Fortinet | FortiOS |
7.6.1 (affected)
|
— |
| Fortinet | FortiProxy |
7.6.2 (affected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://fortiguard.fortinet.com/psirt/FG-IR-26-174 psirt@fortinet.com
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:access.redhat.com
Overall, you have the following options: Upgrade to a supported product version that includes a fix for this vulnerability (recommended). Apply a mitigation (if one exists). Customers with the Technical Account Manager (TAM) RHEL Security Select Add-on can review this CVE directly with their TAM.
2026-09-09 09:25 UTC -
web:app.opencve.io
The vulnerability is an improper validation of certificates that allows a host mismatch to be accepted, which can enable attackers to obtain sensitive information from the device. The weakness is identified as CWE‑297, related to improper certificate validation.
2026-09-09 09:25 UTC -
web:cvefeed.io
The following list is the news that have been mention CVE-2026-84393 vulnerability anywhere in the article. Results are limited to the first 20 news articles due to potential performance issues. The following table lists the changes that have been made to the CVE-2026-84393 vulnerability over time.
2026-09-09 09:25 UTC -
web:cvetodo.com
CVE-2026-84393 is an Information Disclosure vulnerability in Fortinet FortiOS, FortiProxy. Includes technical details, affected versions, and mitigation steps.
2026-09-09 09:25 UTC -
web:nvd.nist.gov
Vulnerabilities All vulnerabilities in the NVD have been assigned a CVE identifier and thus, abide by the definition below. CVE defines a vulnerability as: "A weakness in the computational logic (e.g., code) found in software and hardware components that, when exploited, results in a negative impact to confidentiality, integrity, or availability. Mitigation of the vulnerabilities in this ...
2026-09-09 09:25 UTC -
web:radar.offseq.com
Mitigation Recommendations An official fix is available from Fortinet for affected versions. Users should apply the vendor-provided patches promptly to remediate this vulnerability. Since the remediation level is official- fix , updating to fixed versions is the recommended mitigation .
2026-09-09 09:25 UTC -
web:vulmon.com
Fortinet FortiOS/FortiProxy Certificate Mismatch Information Disclosure. An information disclosure vulnerability exists in Fortinet FortiOS versions 7.6.1 throu…
2026-09-09 09:25 UTC -
web:www.nist.gov
NIST maintains the National Vulnerability Database (NVD), a repository of information on software and hardware flaws that can compromise computer security. This is a key piece of the nation's cybersecurity infrastructure.
2026-09-09 09:25 UTC -
web:www.oracle.com
This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.
2026-09-09 09:25 UTC -
web:www.rapid7.com
CVE-2026-84393 : Fortinet: A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6,…. View severity, references, and remediation details from Rapid7.
2026-09-09 09:25 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-84393.json.
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