Vulnerability

CVE-2026-106173

Critical· 9.8CVSS9.8EPSS0%

.rules3/5

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.

Threat signal

98/100

Severe

Severity

critical

CVSS

9.8

EPSS

Active

CVSS

v3.1via NVDOpen in FIRST calculator →

9.8/ 10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredNoneUnauthenticated — no credentials needed.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

0.46%

probability of exploitation in next 30 days

p39

higher than 39% of all CVEs

3-day trend↑ 0pp

Low exploitation likelihood — defer if no other signals fire.

Vendor VEX

No VEX statements published for CVE-2026-106173. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCTrack

Total impact on non-trivial mission systems

exploitation: none
automatable: yes
impact: total
mission: support

Lifecycle

2026-10-13Published
2026-10-20Mentioned in rss:thehackernewsCritical FortiSIEM Flaw Gets Public Exploit PoC for Unauthenticated Remote Code
2026-10-21Last modified1 source

CVE-2026-106173

CVSS

EPSS

Vendor VEX

Lifecycle

Entity graph

Mentions in news & research

References

CVE-2026-106173

CVSS

EPSS

Vendor VEX

Lifecycle

Entity graph

Mentions in news & research

References