PSIRT FGFM Authentication Weakening via CLI Configuration

{
  "id": "dfef476ae0ae472f7837a3506ca2a3906bdd00e121dd2a1d20989362ba174e52",
  "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-160",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "PSIRT FGFM Authentication Weakening via CLI Configuration",
    "summary": "A remote unauthenticated attacker with a valid certificate may impersonate a FortiGate managed by FortiManager under the described CLI configuration. The announcement lists upgrades for affected FortiManager and FortiManager Cloud releases and provides a workaround.",
    "evidence": "An Authentication Bypass Using an Alternate Path or Channel [CWE-288] vulnerability in FortiManager and FortiManager Cloud may allow a remote unauthenticated attacker to impersonate any FortiGate managed by the FortiManager with a specific CLI option set via crafted FGFM requests if the attacker has a valid certificate.",
    "products": [
      {
        "name": {
          "value": "FortiManager",
          "evidence": "FortiManager 7.6"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.6.2 or above",
            "evidence": "FortiManager 7.6 7.6.1 Upgrade to 7.6.2 or above"
          },
          {
            "value": "7.4.6 or above",
            "evidence": "FortiManager 7.4 7.4.3 through 7.4.5 Upgrade to 7.4.6 or above"
          },
          {
            "value": "7.2.10 or above",
            "evidence": "FortiManager 7.2 7.2.5 through 7.2.9 Upgrade to 7.2.10 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "7.6.1",
            "evidence": "FortiManager 7.6 7.6.1 Upgrade to 7.6.2 or above"
          },
          {
            "value": "7.4.3 through 7.4.5",
            "evidence": "FortiManager 7.4 7.4.3 through 7.4.5 Upgrade to 7.4.6 or above"
          },
          {
            "value": "7.2.5 through 7.2.9",
            "evidence": "FortiManager 7.2 7.2.5 through 7.2.9 Upgrade to 7.2.10 or above"
          }
        ]
      },
      {
        "name": {
          "value": "FortiManager Cloud",
          "evidence": "FortiManager Cloud 7.6"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.6.2 or above",
            "evidence": "FortiManager Cloud 7.6 7.6.1 Upgrade to 7.6.2 or above"
          },
          {
            "value": "7.4.6 or above",
            "evidence": "FortiManager Cloud 7.4 7.4.3 through 7.4.5 Upgrade to 7.4.6 or above"
          },
          {
            "value": "7.2.10 or above",
            "evidence": "FortiManager Cloud 7.2 7.2.5 through 7.2.9 Upgrade to 7.2.10 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "7.6.1",
            "evidence": "FortiManager Cloud 7.6 7.6.1 Upgrade to 7.6.2 or above"
          },
          {
            "value": "7.4.3 through 7.4.5",
            "evidence": "FortiManager Cloud 7.4 7.4.3 through 7.4.5 Upgrade to 7.4.6 or above"
          },
          {
            "value": "7.2.5 through 7.2.9",
            "evidence": "FortiManager Cloud 7.2 7.2.5 through 7.2.9 Upgrade to 7.2.10 or above"
          }
        ]
      }
    ],
    "severity": "high",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-70468",
        "evidence": "CVE ID CVE-2026-70468"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "Severity High"
  },
  "source_id": "official-fortinet-psirt",
  "document_id": 23576,
  "published_at": "2026-08-12T07:00:00+00:00"
}