Service interruption via uninitialized variable use
Published Sep 8, 2026 · Updated Sep 8, 2026
Use of an uninitialized variable in Fortinet FortiAnalyzer 7.6.3 through 7.6.6 allows attackers to interrupt the service. The public record identifies uninitialized variable use but does not name the affected component or explain how attacker-controlled input reaches it. Attacker access requirements, the triggering input, and whether interruption means a hang, crash, or reboot remain undisclosed.
Summary
What happened
Use of an uninitialized variable in Fortinet FortiAnalyzer 7.6.3 through 7.6.6 allows attackers to interrupt the service. The public record identifies uninitialized variable use but does not name the affected component or explain how attacker-controlled input reaches it. Attacker access requirements, the triggering input, and whether interruption means a hang, crash, or reboot remain undisclosed.
The record
- CVE
- CVE-2026-84391
- Published
- Sep 8, 2026
- Updated
- Sep 8, 2026
- Vendor
- Fortinet
- Product
- FortiAnalyzer
- Classifications
- CWE-457
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.6.3 <=7.6.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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