PatchTheCVECVE-2026-106173: A improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet For
CVE-2026-106173 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Public exploit reference
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.0% (top 37%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2026-10-13 |
| Last modified | 2026-10-21 |
Last updated 2026-10-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: horizon3ai/CVE-2026-106173 (31 stars)
- GitHub PoC: tc4dy/CVE-2026-106173-PoC-Exploit (5 stars)
- GitHub PoC: 0xBlackash/CVE-2026-106173 (2 stars)
Advisories and coverage
Official advisories
- Canadian Cyber Centre: Fortinet security advisory (AV26-1037) - Update 1 2026-10-23
Research and news
- Horizon3.ai: CVE-2026-106173 Deep-Dive: FortiSIEM gRPC Path Traversal File Write RCE 2026-10-20
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-106173?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-106173 being exploited?
CVE-2026-106173 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-106173 affect?
CVE-2026-106173 affects affected software. Severity is critical (CVSS 9.8). 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.
How urgent is CVE-2026-106173?
Priority 63/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action