FortiOS
Fortinet FortiOS 5.6
Vulnerabilities, fixed releases, vendor recommendation and support status of the 5.6 branch, from official sources.
Sources last modified 17 Jun 2026 · Last verified by Patcharo: 1 Oct 2026 at 09:30 UTC
- 5
- Matched CVEs
- 1
- CISA KEV
- 5.6.13
- Newest fix stated
- End of life · 30 Sept 2021
- Support
including 2 critical
In brief
- Recommended maintenance build
- No official recommendation
- Recommended release
- No official recommendation
- Releases listed by the vendor
- No release list read from the vendor
- CERT-FR
- 0 documents
Vulnerabilities affecting 5.6
Each record matched to this branch with the fixed release the source states, newest first.
- Critical9.8CVSS 3.1, CriticalFirst fixed releaseMigration to a fixed release requiredPublished
- High8.8CVSS 3.1, HighFirst fixed release5.6.13Published
- High7.5CVSS 3.1, HighFirst fixed release5.6.13Published
- High8.8CVSS 3.1, HighFirst fixed releaseMigration to a fixed release requiredPublished
- Critical9.8CVSS 3.1, CriticalFirst fixed releaseMigration to a fixed release requiredPublished
Vendor recommendation
The vendor's own statement about what to run, with its date and source. Separate from vulnerabilities and from support status: being behind a recommendation is not a vulnerability, and a supported release is not necessarily the recommended one.
Support status
From the vendor's published life-cycle policy; support is not a recommendation.
- 5.6SupportEnd of lifeEnd of support30 Sept 2021
Fortinet Product Life Cycle (software) · retrieved 1 Oct 2026 at 13:38 UTC
How Patcharo reads this
Affected and fixed releases come from the vendor's structured statements, matched by exact version and patch level. The recommendation is the vendor's own statement; the support status comes from its life-cycle policy. Unknown never becomes Not affected.
Read the methodologyRead the guide: FortiOS version numbering: branches, patch releases and the Feature and Mature labels