High severity · published Sep 6, 2022
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…
7.5
CVSS
1.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiOS · Fortinet
6.0.0 through 6.0.14; 6.2.0 before 6.2.11; 6.4.0 before 6.4.9; 7.0.0 before 7.0.6; 7.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-27491
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-27491
Vendor Advisory
https://fortiguard.com/psirt/FG-IR-22-073
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