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CVE-2026-126245 fortinet fortiauthenticator: Out-of-bounds Write

8.1 highEPSS 0.3%

High (8.1) in fortinet fortiauthenticator. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

On this page
A out-of-bounds write vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to execute unauthorized code or commands via http requests, should the attacker be able to defeat ASLR protections.

Severity

CVSS 3.1

8.1 high
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 24th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-12. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-787 Out-of-bounds Write
Published
Modified
Assigned by
fortinet (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
Fortinet FortiAuthenticatorfrom 8.0.0 through 8.0.3
Fortinet FortiAuthenticatorfrom 6.6.0 through 6.6.10

References

Check your stackJSON