Fortinet revises OSPF authentication-bypass notice FG-IR-26-267
First merged summary.
Fortinet revised an OSPF daemon authentication-bypass notice rated 9.3, with no versions, fix, or exploitation status.
On November 10, 2026, Fortinet PSIRT revised FG-IR-26-267, an authentication bypass by primary weakness in the OSPF daemon of FortiOS and FortiSASE. An unauthenticated attacker may broadcast LSAs with a specially crafted request. Fortinet scores the issue CVSSv3 9.3 and classifies it as CWE-305. The notice gives no affected versions, fixed release, or exploitation status.
- Tracked as FG-IR-26-267 and classified as CWE-305.
- The issue is in the FortiOS and FortiSASE OSPF daemon.
- Described impact is broadcasting LSAs, not code execution.
- The notice lists no affected versions, fix, or exploitation status.
Timeline
dated events in the reporting · oldest first- Nov 10, 2026Fortinet PSIRT revised advisory FG-IR-26-267 · Fortinet PSIRT
What each outlet adds
beyond the shared facts- Fortinet PSIRTScores the OSPF issue 9.3 and gives no versions or fix.
- Vendors
- Fortinet
Coverage
oldest first · one row per article · UTCFortiOS and FortiSASE OSPF flaw lets unauthenticated attackers send LSAs
Fortinet rates the CWE-305 weakness 9.3; the notice gives no versions, fix, or exploitation status.
Fortinet sshd path traversal can bypass authentication without login
The CVSS 7.4 issue also covers FortiSASE, FortiProxy and FortiPam; the notice lists no versions or exploitation.