CVE-2022-27491
A improper verification of source of a communication channel in Fortinet FortiOS with IPS engine version 7.201 through 7.214, 7.001 through 7.113, 6.001 through 6.121, 5.001 through 5.258 and before 4.086 allows a remote and unauthenticated attacker to trigger the sending of "blocked page" HTML data to an arbitrary victim via crafted TCP requests, potentially flooding the victim.
Key facts
- CVSS score
- 6.8 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H- EPSS score
- 1.4% (72th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2022-31992)
- Published
- September 6, 2022
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2022-31992 in the EU Vulnerability Database. Last updated in EUVD on October 22, 2024.
View on the EU Vulnerability DatabaseAffected products
- fortinet / fortios
- fortinet / fortios
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- FortiGate/FortiOS Version 6.2.7 - Fortinet, Inc. - Common Criteria 559-LSS - archived
References
- https://fortiguard.com/psirt/FG-IR-22-073(Vendor Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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