Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
CISA lists this Fortinet FortiOS vulnerability as known exploited. The vendor's advisory has the fixed versions.
CISA catalog record
Fortinet FortiOS contains an exposure of sensitive information to an unauthorized actor vulnerability. This may allow a remote unauthenticated attacker to bypass the patch developed for the symbolic link persistency mechanism observed in some post-exploit cases, via crafted HTTP requests. An attacker would need first to have compromised the product via another vulnerability, at filesystem level.
- Product
- FortiOS
- Added to KEV
- 27 Jul 2026
- Federal remediation due
- 10 Aug 2026
- Known ransomware use
- Not reported
What changed
First observed 14 Oct 2026No field changes in the recorded history.
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