Critical severity · published Oct 13, 2026
CVE-2026-106173
A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiSIEM 7.5.0 may allow attacker to execute unauthorized code or…
9.8
CVSS
1%
EPSS
No
On KEV
Description
A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiSIEM 7.5.0 may allow attacker to execute unauthorized code or commands via specially crafted packets.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
FortiSIEM · Fortinet
7.5.0; 7.4.0 through 7.4.2; 7.3.0 through 7.3.5; 7.2.0 through 7.2.7; 7.1.0 through 7.1.9; 7.0.0 through 7.0.4 · source: vendor
In the news
VulnerabilityCritical
Critical FortiSIEM Flaw Gets Public Exploit PoC for Unauthenticated Remote Code Execution
Cybersecurity researchers have released a proof-of-concept (PoC) exploit for a recently patched critical security flaw impacting Fortinet FortiSIEM that could result in arbitrary code execution.
The vulnerability, tracked as CVE-2026-106173 (CVSS score: 9.4), is a critical path traversal flaw that could allow an unauthenticated attacker to execute unauthorized code or commands via specially
Oct 20, 2026·The Hacker News
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-106173
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-106173
fortiguard.fortinet.com
https://fortiguard.fortinet.com/psirt/FG-IR-26-180
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