PSIRT Buffer overread in authd and wad daemon

{
  "id": "a0118ba3bd7f8177f0c51004be8f6359f390951f250a41535199a07666a6aac5",
  "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-154",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "PSIRT Buffer overread in authd and wad daemon",
    "summary": "An authenticated remote attacker may be able to disclose device memory through a crafted redirect request. Affected FortiOS and FortiProxy releases and their recommended upgrade paths are listed below. FortiSASE is mentioned as affected, but no version guidance is provided.",
    "evidence": "A buffer over-read vulnerability [CWE-126] in FortiOS, FortiProxy, and FortiSASE may allow an authenticated remote attacker to return a portion of device memory in the redirect response via submitting a specially crafted request.",
    "products": [
      {
        "name": {
          "value": "FortiOS",
          "evidence": "FortiOS 7.6"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.6.4 or above",
            "evidence": "Upgrade to 7.6.4 or above"
          },
          {
            "value": "7.4.9 or above",
            "evidence": "Upgrade to 7.4.9 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "7.6.0 through 7.6.3",
            "evidence": "7.6.0 through 7.6.3"
          },
          {
            "value": "7.4.0 through 7.4.8",
            "evidence": "7.4.0 through 7.4.8"
          },
          {
            "value": "7.2 all versions",
            "evidence": "7.2 all versions"
          },
          {
            "value": "7.0 all versions",
            "evidence": "7.0 all versions"
          },
          {
            "value": "6.4 all versions",
            "evidence": "6.4 all versions"
          }
        ]
      },
      {
        "name": {
          "value": "FortiProxy",
          "evidence": "FortiProxy 7.6"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.6.6 or above",
            "evidence": "Upgrade to 7.6.6 or above"
          },
          {
            "value": "7.4.14 or above",
            "evidence": "Upgrade to 7.4.14 or above"
          }
        ],
        "affected_versions": [
          {
            "value": "7.6.0 through 7.6.5",
            "evidence": "7.6.0 through 7.6.5"
          },
          {
            "value": "7.4.0 through 7.4.13",
            "evidence": "7.4.0 through 7.4.13"
          },
          {
            "value": "7.2 all versions",
            "evidence": "7.2 all versions"
          },
          {
            "value": "7.0 all versions",
            "evidence": "7.0 all versions"
          }
        ]
      },
      {
        "name": {
          "value": "FortiSASE",
          "evidence": "in FortiOS, FortiProxy, and FortiSASE"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2025-43892",
        "evidence": "CVE-2025-43892"
      },
      {
        "value": "CVE-2026-59840",
        "evidence": "CVE-2026-59840"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "Severity Medium"
  },
  "source_id": "official-fortinet-psirt",
  "document_id": 23581,
  "published_at": "2026-07-14T07:00:00+00:00"
}