A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS…
- Severity
- High8.8CVSS 3.1, High
- Known exploited
- Not listed
- Exploit prediction
- 0.28%
- Published
- 14 Apr 2026Updated 17 Jun 2026 · Last verified 28 Sept 2026
Known remediation
Fixed releases per branch, as the vendor states them. Patcharo never infers a fix.
Fortinet FortiOS
Vendor advisory- 7.6Fixed after 7.6.3
- 7.4Fixed after 7.4.8
- 7.2Fixed after 7.2.11
- 7.0Fixed after 7.0.17
- 6.4Fixed after 6.4.16
- 6.2Fixed after 6.2.17
Workaround / Vendor remediation
Vendor remediation · FortiOS
Upgrade to FortiOS version 7.6.4 or above Upgrade to FortiOS version 7.4.9 or above Upgrade to FortiOS version 7.2.12 or above Upgrade to FortiOS version 7.0.18 or above
Description
Title, description and vendor guidance are quoted from the source records.
A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiOS 6.2.9 through 6.2.17 allows attacker to execute unauthorized code or commands via specially crafted packets.
Weakness: CWE-306
Known exploited
Not listed in CISA KEV as of the last check.
Exploit prediction
0.28% probability of exploitation in the next 30 days (percentile 19%).
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What the source states, per branch
Versions matched by Patcharo
Fortinet FortiOSSource: Fortinet (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 7.6 | 7.6.0 – 7.6.3 | Fixed after 7.6.3 |
| 7.4 | 7.4.0 – 7.4.8 | Fixed after 7.4.8 |
| 7.2 | 7.2.0 – 7.2.11 | Fixed after 7.2.11 |
| 7.0 | 7.0.0 – 7.0.17 | Fixed after 7.0.17 |
| 6.4 | 6.4.0 – 6.4.16 | Fixed after 6.4.16 |
| 6.2 | 6.2.9 – 6.2.17 | Fixed after 6.2.17 |
Versions not listed are stated unaffected by the vendor.
References
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Fortinet (CVE record)
- Fortinet (CVE record) · 28 Sept 2026 at 21:17 UTC · Parser patcharo-cve5/1.1.0
- NVD
- NVD · 27 Sept 2026 at 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 30 Sept 2026 at 00:17 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026 at 21:17 UTC