A use of uninitialized variable vulnerability in Fortinet FortiAnalyzer 7.6.3 through…
Priority LOW 27CWE-457Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-457 and the CVSS impact.
Summary
A use of uninitialized variable vulnerability in Fortinet FortiAnalyzer 7.6.3 through 7.6.6 may allow attacker to denial of service via SNMP GETBULK requests.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00411 35th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Fortinet | FortiAnalyzer | 7.6.3 – 7.6.6 | — | No fix listed | CNA |
- FortiAnalyzer VendorFortinet Affected 7.6.3 – 7.6.6 Fixed in — No fix listed CNA
CPE names CNA · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:fortinet:fortianalyzer:7.6.6:*:*:*:*:*:*:* | 7.6.6 | — | Fortinet |
| cpe:2.3:o:fortinet:fortianalyzer:7.6.5:*:*:*:*:*:*:* | 7.6.5 | — | Fortinet |
| cpe:2.3:o:fortinet:fortianalyzer:7.6.4:*:*:*:*:*:*:* | 7.6.4 | — | Fortinet |
| cpe:2.3:o:fortinet:fortianalyzer:7.6.3:*:*:*:*:*:*:* | 7.6.3 | — | Fortinet |
- cpe:2.3:o:fortinet:fortianalyzer:7.6.6:*:*:*:*:*:*:* Versions 7.6.6 — ·Fortinet
- cpe:2.3:o:fortinet:fortianalyzer:7.6.5:*:*:*:*:*:*:* Versions 7.6.5 — ·Fortinet
- cpe:2.3:o:fortinet:fortianalyzer:7.6.4:*:*:*:*:*:*:* Versions 7.6.4 — ·Fortinet
- cpe:2.3:o:fortinet:fortianalyzer:7.6.3:*:*:*:*:*:*:* Versions 7.6.3 — ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84391
- 2026-10-03 Alias added: GHSA-f3rw-5qfx-8w2r
- 2026-11-06 Title updated · CNA
References
More Fortinet vulnerabilities
- TI-2026-65779 Path traversal in Fortinet FortiMail KEVCVSS 3.1CRITICAL 9.8
- TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
- TI-2025-39856 Path traversal in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
- TI-2025-23811 Stack-based buffer overflow in Fortinet FortiNDR KEVCVSS 3.1CRITICAL 9.8
- TI-2025-18919 SQL injection in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.8
- TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-84391 · CVE Program
- CVE-2026-84391 · NVD
- FIRST EPSS
- GHSA-f3rw-5qfx-8w2r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences