CVE-2026-126253

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-126253
StatePUBLISHED
Assignerfortinet
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-11 22:17:25 UTC
Updated2026-11-12 19:14:29 UTC
DescriptionA authentication bypass by primary weakness vulnerability in Fortinet FortiOS 8.0.0 through 8.0.1, FortiOS 7.6.0 through 7.6.7, FortiOS 7.4.0 through 7.4.12, FortiOS 7.2.0 through 7.2.13 may allow an unauthenticated attacker to broadcast LSA via specially crafted request

Risk And Classification

Primary CVSS: v3.1 9.3 CRITICAL from [email protected]

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

EPSS: 0.003740000 probability, percentile 0.318430000 (date 2026-11-12)

Problem Types: CWE-305 | CWE-305 Improper access control

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.3CRITICALCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
3.1CNACVSS9.3CRITICALCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H/E:P/RL:O/RC:C

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Fortinet FortiOS affected 8.0.0 8.0.1 semver Not specified
CNA Fortinet FortiOS affected 7.6.0 7.6.7 semver Not specified
CNA Fortinet FortiOS affected 7.4.0 7.4.12 semver Not specified
CNA Fortinet FortiOS affected 7.2.0 7.2.13 semver Not specified
CNA Fortinet FortiOS affected 7.0.1 7.0.19 semver Not specified

References

ReferenceSourceLinkTags
fortiguard.fortinet.com/psirt/FG-IR-26-267 [email protected] fortiguard.fortinet.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to FortiOS version 8.0.2 or above Upgrade to FortiOS version 7.6.8 or above Upgrade to FortiOS version 7.4.13 or above Upgrade to FortiOS version 7.2.14 or above

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