CVE-2026-126254: Critical severity vulnerability
Published Nov 11, 2026
·Updated
A numeric truncation error 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 a configured ibgp neighbor to send malicious/malformed attributes to all connected routers via a specially crafted request
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Fortinet FortiOSto a version that resolves this vulnerability.Fixed in 7.2.14 - Upgrade
Upgrade
Fortinet FortiOSto a version that resolves this vulnerability.Fixed in 7.4.13 - Upgrade
Upgrade
Fortinet FortiOSto a version that resolves this vulnerability.Fixed in 7.6.8 - Upgrade
Upgrade
Fortinet FortiOSto a version that resolves this vulnerability.Fixed in 8.0.2
Event History
Nov 11, 2026
CVE Published
via MITRE·09:31 PM
Data Sourced
via MITRE·09:31 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:17 PM
DescriptionSeverityWeakness