Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
- Severity
- Medium5.9CVSS 3.1, Medium
- EPSS
- 30%
- Published
- 10 Feb 2026
- Updated
- 28 Jul 2026
Description
Title, description and vendor guidance are quoted from the source records.
An Exposure of Sensitive Information to an Unauthorized Actor vulnerability [CWE-200] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.1, FortiOS 7.4.0 through 7.4.6, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions may allow a remote unauthenticated attacker to bypass the patch developed for the symbolic link persistency mechanism observed in some post-exploit cases, via crafted HTTP requests. An attacker would need first to have compromised the product via another vulnerability, at filesystem level.
Weakness: CWE-200
Known exploited
Added to CISA KEV on 27 Jul 2026
Federal remediation due date: 10 Aug 2026
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Exploit prediction
30% probability of exploitation in the next 30 days (percentile 98%).
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
What the source states, per branch
Versions matched by Patcharo
Fortinet FortiOSSource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.6 | 7.6.0 – 7.6.1 | Fixed after 7.6.1 |
| 7.4 | 7.4.0 – 7.4.6 | Fixed after 7.4.6 |
| 7.2 | 7.2.0 – 7.2.13 | Fixed after 7.2.13 |
| 7.0 | 7.0.0 – 7.0.19 | Fixed after 7.0.19 |
| 6.4 | 6.4.0 – 6.4.16 | Fixed after 6.4.16 |
Versions not listed are stated unaffected by the vendor.
Workaround / Vendor remediation
Vendor remediation · FortiOS
Upgrade to FortiOS version 7.6.2 or above Upgrade to FortiOS version 7.4.7 or above
References
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Fortinet (CVE record)
- Fortinet (CVE record) · 27 Sept 2026, 23:46 UTC · Parser patcharo-cve5/1.1.0
- CISA Known Exploited Vulnerabilities
- CISA Known Exploited Vulnerabilities · 27 Sept 2026, 23:42 UTC · Parser patcharo-kev/1.0.0
- NVD
- NVD · 27 Sept 2026, 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026, 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026, 02:31 UTC