High severity · published Feb 10, 2026
CVE-2025-64157
A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0 all…
7.2
CVSS
1.5%
EPSS
No
On KEV
Description
A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0 all versions allows an authenticated admin to execute unauthorized code or commands via specifically crafted configuration.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiOS · Fortinet
7.6.0 through 7.6.4; 7.4.0 through 7.4.9; 7.2.0 through 7.2.11; 7.0.0 through 7.0.19 · source: vendor, NVD
RA
RUGGEDCOM APE1808 · Siemens
0 · source: CISA
In the news
VulnerabilityCritical
Siemens RUGGEDCOM APE1808 Devices
View CSAF
Summary
Fortinet has published information on vulnerabilities in FORTIOS. This advisory lists the related Siemens Industrial products. Siemens has released a new version for RUGGEDCOM APE1808 and recommends to update to the latest version.
The following versions of Siemens RUGGEDCOM APE1808 Devices are affected:
RUGGEDCOM APE1808 vers:all/*, vers:all/* (CVE-2026-24858, CVE-2025-55018, CVE-2025-62439, CVE-2025-64157)
CVSS
Vendor
Equipment
Vulnerabilities
v3 9.8
Siemens
Siemens RUGGEDCOM APE1808 Devices
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'), Improper Verification of Source of a Communication Channel, Use of Externally-Controlled Format String, Authentication Bypass Using an Alternate Path or Channel
Background
Critical Infrastructure Sectors: Critical Manufacturing, Energy, Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany
Vulnerabilities
Expand All +
CVE-2025-55018
An inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4.3 through 6.4.16 may allow an unauthenticated attacker to smuggle an unlogged http request through the firewall policies via a specially crafted header
View CVE Details
Affected Products
Siemens RUGGEDCOM APE1...
Mar 12, 2026·CISA Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64157
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64157
Vendor Advisory
https://fortiguard.fortinet.com/psirt/FG-IR-25-795
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-975644.html
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