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CVE-2026-84391

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.

Products / packages Fortinet FortiAnalyzer

Published

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Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 15/11/2026, 01:40:32 UTC
fortinet · CVSS:3.1 · 5.9
Assessment vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C

Severity

medium5.9

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Source guidance available

Review the recorded instructions. Guidance may be a workaround rather than a fixed version.

What this means

A use of uninitialized variable vulnerability in Fortinet FortiAnalyzer versions 7.6.3 through 7.6.6 may allow an attacker to cause a denial of service via SNMP GETBULK requests. The attacker needs access to send these requests. The stated impact is a denial of service.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Fortinet · fortinet

FortiAnalyzer

1 range
fortinet version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

7.6.3 → through 7.6.6

semver versions

unaffected

unknown

Other versions: unaffected

Product identifiers (CPE)cpe:2.3:o:fortinet:fortianalyzer:7.6.6:*:*:*:*:*:*:*cpe:2.3:o:fortinet:fortianalyzer:7.6.5:*:*:*:*:*:*:*cpe:2.3:o:fortinet:fortianalyzer:7.6.4:*:*:*:*:*:*:*cpe:2.3:o:fortinet:fortianalyzer:7.6.3:*:*:*:*:*:*:*
Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

Upgrade to FortiAnalyzer version 8.0.0 or above Upgrade to FortiAnalyzer version 7.6.7 or above

fortinet guidance ↗

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

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.

References

1 sources
fortiguard.fortinet.com/psirt/FG-IR-26-172
Source referencefortinet

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-84391

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-457 ↗

Denial of service

fortinet

Related →
Contributing organizations · 2
fortinet

Assigning organization

2026-11-06
CISA-ADP

Additional data publisher

2026-09-08

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.