November 13, 2026 Follow Egret
CVE-2025-25249 · CVE record: PUBLISHED

Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability

Fortinet FortiSwitchManager, Fortinet FortiOS

A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets

Exploitation evidence

Known exploited · CISA KEV listed

Added 2026-09-09. Ransomware campaign use: Unknown.

CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CISA due date: 2026-09-12. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

Fortinet / FortiSwitchManager

Default status: unaffected

  • affected: 7.2.2 to ≤ 7.2.5 (semver)

Fortinet / FortiOS

Default status: unaffected

  • affected: 7.6.0 to ≤ 7.6.2 (semver)
  • affected: 7.4.0 to ≤ 7.4.7 (semver)
  • affected: 7.2.4 to ≤ 7.2.11 (semver)

Fixes and workarounds

Upgrade to FortiSwitchManager version 7.2.7 or above Upgrade to FortiSwitchManager version 7.0.6 or above Fortinet remediated this issue in FortiSASE version 25.2.c and hence customers do not need to perform any action. Fortinet remediated this issue in FortiSASE version 25.1.b and hence customers do not need to perform any action. Upgrade to upcoming FortiOS version 8.0.0 or above Upgrade to FortiOS version 7.6.4 or above Upgrade to FortiOS version 7.4.9 or above Upgrade to FortiOS version 7.2.12 or above Upgrade to FortiOS version 7.0.18 or above

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.03742,
  "percentile": 0.90011
}
10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.03742,
  "percentile": 0.89947
}
09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.03742,
  "percentile": 0.89934
}
08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.03742,
  "percentile": 0.89928
}
07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.03742,
  "percentile": 0.89921
}
06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.03742,
  "percentile": 0.89906
}
06 Nov 2026, 06:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.03742,
  "percentile": 0.89896
}
04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.03742,
  "percentile": 0.89887
}
03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.03742,
  "percentile": 0.89871
}
03 Nov 2026, 18:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-25249",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T03:55:15.906990Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-09-09",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-25249"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-07T17:56:49.319Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "third-party-advisory"
            ],
            "url": "https://socradar.io/blog/cve-2025-25249-pivotc2-fortigate-rat/"
          },
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-25249"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "RUGGEDCOM APE1808",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T01:05:48.869Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-864900.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:fortinet:fortiswitchmanager:7.2.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiswitchmanager:7.2.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiswitchmanager:7.2.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiswitchmanager:7.2.2:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "FortiSwitchManager",
          "vendor": "Fortinet",
          "versions": [
            {
              "lessThanOrEqual": "7.2.5",
              "status": "affected",
              "version": "7.2.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.6.1:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.6.0:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.4.7:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.4.6:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.4.5:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.4.4:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.4.3:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.4.2:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.2.11:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.2.10:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.2.9:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.2.8:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.2.7:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.2.6:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.2.5:*:*:*:*:*:*:*",
            "cpe:2.3:o:fortinet:fortios:7.2.4:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "FortiOS",
          "vendor": "Fortinet",
          "versions": [
            {
              "lessThanOrEqual": "7.6.2",
              "status": "affected",
              "version": "7.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.4.7",
              "status": "affected",
              "version": "7.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.11",
              "status": "affected",
              "version": "7.2.4",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "Execute unauthorized code or commands",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-23T08:51:58.404Z",
        "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
        "shortName": "fortinet"
      },
      "references": [
        {
          "name": "https://fortiguard.fortinet.com/psirt/FG-IR-25-084",
          "url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-084"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to FortiSwitchManager version 7.2.7 or above\nUpgrade to FortiSwitchManager version 7.0.6 or above\nFortinet remediated this issue in FortiSASE version 25.2.c and hence customers do not need to perform any action.\nFortinet remediated this issue in FortiSASE version 25.1.b and hence customers do not need to perform any action.\nUpgrade to upcoming  FortiOS version 8.0.0 or above\nUpgrade to FortiOS version 7.6.4 or above\nUpgrade to FortiOS version 7.4.9 or above\nUpgrade to FortiOS version 7.2.12 or above\nUpgrade to FortiOS version 7.0.18 or above"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
    "assignerShortName": "fortinet",
    "cveId": "CVE-2025-25249",
    "datePublished": "2026-01-13T16:32:35.662Z",
    "dateReserved": "2025-02-05T13:31:18.866Z",
    "dateUpdated": "2026-10-15T01:05:48.869Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.03742,
  "percentile": 0.89857
}
03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2025-25249",
  "cwes": [
    "CWE-122",
    "CWE-787"
  ],
  "dateAdded": "2026-09-09",
  "dueDate": "2026-09-12",
  "forensicTriage": "Yes",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://fortiguard.fortinet.com/psirt/FG-IR-25-084 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2025-25249",
  "product": "Multiple Products",
  "requiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
  "shortDescription": "Fortinet FortiOS, FortiSwitchManager, and FortiSASE contain a heap-based buffer overflow vulnerability that allows an attacker to execute unauthorized code or commands via specially crafted packets.",
  "vendorProject": "Fortinet",
  "vulnerabilityName": "Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability"
}
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