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HighFix available

Out of bounds read in GUI

Type: advisorySources: Fortinet PSIRT

A remote unauthenticated attacker may retrieve sensitive information from FortiAuthenticator using a specially crafted request.

Products
FortiAuthenticator
Affected versions
6.5 all versions, 6.6.0 through 6.6.2
Fixed versions
6.6.3 or above
CVEs
CVE-2025-53379
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 20:22 UTC · Revision 1

Source evidence

Out of bounds read in GUI

official-fortinet-psirt · Original source

Published 14 Jul 2026, 07:00 UTC

A remote unauthenticated attacker may retrieve sensitive information from FortiAuthenticator using a specially crafted request.

may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.

FortiAuthenticator

Fixed versions: 6.6.3 or above

FortiAuthenticator

Fixed versions: Not specified

FortiAuthenticator

Fixed versions: Not specified

Complete source record
{
  "id": "ae0cff355927df23d5af6bcd0e00a16d602327f2ed779c7390c7c37d171be526",
  "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-146",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "Out of bounds read in GUI",
    "summary": "A remote unauthenticated attacker may retrieve sensitive information from FortiAuthenticator using a specially crafted request.",
    "evidence": "may allow a remote unauthenticated attacker to retrieve sensitive information via a specially crafted request.",
    "products": [
      {
        "name": {
          "value": "FortiAuthenticator",
          "evidence": "FortiAuthenticator 6.6"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.3 or above",
            "evidence": "Upgrade to 6.6.3 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "6.6.0 through 6.6.2",
            "evidence": "6.6.0 through 6.6.2"
          }
        ]
      },
      {
        "name": {
          "value": "FortiAuthenticator",
          "evidence": "FortiAuthenticator 6.5"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "6.5 all versions",
            "evidence": "6.5 all versions"
          }
        ]
      },
      {
        "name": {
          "value": "FortiAuthenticator",
          "evidence": "FortiAuthenticator 8.0"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2025-53379",
        "evidence": "CVE ID CVE-2025-53379"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "Severity High"
  },
  "source_id": "official-fortinet-psirt",
  "document_id": 23586,
  "published_at": "2026-07-14T07:00:00+00:00"
}