High severity · published Dec 9, 2025
CVE-2025-64447
A reliance on cookies without validation and integrity checking vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through…
8.1
CVSS
8.4%
EPSS
No
On KEV
Description
A reliance on cookies without validation and integrity checking vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through 7.4.10, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an unauthenticated attacker to execute arbitrary operations on the system via crafted HTTP or HTTPS request via forged cookies, requiring prior knowledge of the FortiWeb serial number.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)8.4% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fortiweb · Fortinet
7.0.0 through 7.0.11; 7.2.0 through 7.2.11; 7.4.0 through 7.4.10; 7.6.0 through 7.6.5; 8.0.0 through 8.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64447
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64447
Vendor Advisory
https://fortiguard.fortinet.com/psirt/FG-IR-25-945
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