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MediumFix available

Uncontrolled Resource Consumption in SNMP

Type: advisorySources: Fortinet PSIRT

A remote authenticated attacker with user permission may cause a denial of service in the FortiAnalyzer SNMP daemon using SNMP GETBULK requests. FortiAnalyzer 7.6.3 through 7.6.6 are affected; upgrade to 7.6.7 or above. Disabling SNMP is a workaround. FortiAnalyzer Cloud is not affected.

Products
FortiAnalyzer
Affected versions
7.6.3 through 7.6.6
Fixed versions
7.6.7 or above
CVEs
CVE-2026-84391
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 19:46 UTC · Revision 1

Source evidence

Uncontrolled Resource Consumption in SNMP

official-fortinet-psirt · Original source

Published 8 Sept 2026, 07:00 UTC

A remote authenticated attacker with user permission may cause a denial of service in the FortiAnalyzer SNMP daemon using SNMP GETBULK requests. FortiAnalyzer 7.6.3 through 7.6.6 are affected; upgrade to 7.6.7 or above. Disabling SNMP is a workaround. FortiAnalyzer Cloud is not affected.

A Use of Uninitialized Variable [CWE-457] vulnerability in Fortinet FortiAnalyzer SNMP daemon may allow a remote authenticated attacker with user permission to cause a denial of service via SNMP GETBULK requests.

FortiAnalyzer

Fixed versions: 7.6.7 or above

Prerequisites: remote authenticated attacker with user permission

Complete source record
{
  "id": "bbba80fb120db834bcbf46719a765643311feee3886b604d0a4787b063c3bd77",
  "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-172",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "Uncontrolled Resource Consumption in SNMP",
    "summary": "A remote authenticated attacker with user permission may cause a denial of service in the FortiAnalyzer SNMP daemon using SNMP GETBULK requests. FortiAnalyzer 7.6.3 through 7.6.6 are affected; upgrade to 7.6.7 or above. Disabling SNMP is a workaround. FortiAnalyzer Cloud is not affected.",
    "evidence": "A Use of Uninitialized Variable [CWE-457] vulnerability in Fortinet FortiAnalyzer SNMP daemon may allow a remote authenticated attacker with user permission to cause a denial of service via SNMP GETBULK requests.",
    "products": [
      {
        "name": {
          "value": "FortiAnalyzer",
          "evidence": "FortiAnalyzer 7.6"
        },
        "prerequisites": [
          {
            "value": "remote authenticated attacker with user permission",
            "evidence": "may allow a remote authenticated attacker with user permission to cause a denial of service"
          }
        ],
        "fixed_versions": [
          {
            "value": "7.6.7 or above",
            "evidence": "Upgrade to 7.6.7 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "7.6.3 through 7.6.6",
            "evidence": "7.6.3 through 7.6.6"
          }
        ]
      }
    ],
    "severity": "medium",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-84391",
        "evidence": "CVE ID CVE-2026-84391"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "Severity Medium"
  },
  "source_id": "official-fortinet-psirt",
  "document_id": 23569,
  "published_at": "2026-09-08T07:00:00+00:00"
}