CVE-2026-3987 (GCVE-0-2026-3987)

Vulnerability from cvelistv5 – Published: 2026-04-01 21:32 – Updated: 2026-08-10 16:46
VLAI
Title
WatchGuard Firebox Arbitrary File Write vis Path Traversal in Fireware Web UI
Summary
A path traversal vulnerability in the Fireware OS Web UI on WatchGuard Firebox systems may allow a privileged authenticated remote attacker to execute arbitrary code in the context of an elevated system process.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 00:00 UTC
CWE
Assigner
WatchGuard CNA under the mitre root
CNA scorecard A 91/100 over 93 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
WatchGuard Fireware OS Affected: 2025.1 , < 2026.2 (custom)
Affected: 12.6.1 , < 12.12 (custom)
    cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
    cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-04-01 21:32
Credits
btaol
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3987",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-02T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-03T03:55:30.681Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Fireware OS",
          "vendor": "WatchGuard",
          "versions": [
            {
              "lessThan": "2026.2",
              "status": "affected",
              "version": "2025.1",
              "versionType": "custom"
            },
            {
              "lessThan": "12.12",
              "status": "affected",
              "version": "12.6.1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2026.2",
                  "versionStartIncluding": "2025.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "12.12",
                  "versionStartIncluding": "12.6.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "btaol"
        }
      ],
      "datePublic": "2026-04-01T21:32:30.426Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A path traversal vulnerability in the Fireware OS Web UI on WatchGuard Firebox systems may allow a privileged authenticated remote attacker to execute arbitrary code in the context of an elevated system process."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "WatchGuard is not aware of any exploitation of this issue in the wild."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-10T16:46:12.527Z",
        "orgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
        "shortName": "WatchGuard"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://psirt.watchguard.com/CVE-2026-3987"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00009"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Fireware OS 2026.2, Fireware OS 12.12"
        }
      ],
      "title": "WatchGuard Firebox Arbitrary File Write vis Path Traversal in Fireware Web UI"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
    "assignerShortName": "WatchGuard",
    "cveId": "CVE-2026-3987",
    "datePublished": "2026-04-01T21:32:30.426Z",
    "dateReserved": "2026-03-11T15:01:46.222Z",
    "dateUpdated": "2026-08-10T16:46:12.527Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-3987",
      "date": "2026-10-28",
      "epss": "0.00679",
      "percentile": "0.52214"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Fireware OS",
                "vendor": "WatchGuard",
                "versions": [
                  {
                    "lessThan": "2026.2",
                    "status": "affected",
                    "version": "2025.1",
                    "versionType": "custom"
                  },
                  {
                    "lessThan": "12.12",
                    "status": "affected",
                    "version": "12.6.1",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2E203901-C92E-46F2-BC38-76C0A78FEB41",
                    "versionEndExcluding": "2026.2",
                    "versionStartIncluding": "2025.1",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m295:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "615FF2CF-69DA-4890-9236-52D8D6FA0E71",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m395:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A3439409-2FD6-447B-91CF-17D1C09E2A79",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m495:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C0C0412F-AB02-4D13-B159-D0FCD2ECA3ED",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m595:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "575CC5EE-0278-489B-AA95-5EC5058D6FB9",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m695:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5597F672-3C72-4BCF-AD3F-F16B6913EC2F",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t115-w:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E8AAE66B-DD19-4C90-8DFC-F77BA1541642",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t125:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7FC18430-C6B4-4395-BFF1-83BB005875BA",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t125-w:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1A7C1C91-8B6E-4FB0-841E-7F88B06B1435",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t145:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8FE309D6-BD5E-4D18-91C3-A492C3576115",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t145-w:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "75959D39-0960-4836-96C7-DB8048DDE4B8",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t185:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D0087049-27C6-4B18-A645-72A8F63D7C6D",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6F706D3C-DBA2-4FEB-8F08-335D17A4C43C",
                    "versionEndExcluding": "12.12",
                    "versionStartIncluding": "12.6.1",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:watchguard:firebox_cloud:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BD0A5008-C4F7-434B-8C10-AEB5B1F9E071",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m270:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E472917E-D6E1-4C2D-B37D-E76FCC7307CA",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m290:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9A8C7779-4466-4A9E-B191-929E7746DFF7",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m370:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6CE9A123-B769-4E56-845E-DC3DA6166C78",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m390:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "180FAE8C-2E73-4C09-AA11-0C82A7715FA3",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m440:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "309DBEF2-1D92-4641-827F-D99758B5FFA3",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m4600:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D1E8CFC5-51FE-4D75-845F-D70C30AF11B0",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m470:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BBFBA966-E052-4350-9544-3B5D484DBB6B",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m4800:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EF1E586D-0E88-447A-95E8-5203EF869ADB",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m5600:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1BC087C4-CB10-46D4-A746-0C462354410C",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m570:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "59389EA2-3067-4AF8-AEC5-FE79E269C170",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m5800:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "445FA7CD-D0AE-4176-9AE5-293B918DE654",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m590:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1B4A7366-0304-431E-B3E4-719BA575CEAC",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m670:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E8512B4A-5269-4067-B9C6-475A4E8AD313",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_m690:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "179C6166-87E1-44F8-B727-CDDE40C673D9",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_nv5:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "584107CC-6136-4AA1-AE68-73B93BDDB5B6",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t20:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9295217E-C1A0-4A69-A0F0-C44814BB376C",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t25:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7DC49246-2166-4681-8D67-4C0940884872",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t40:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CC853916-8BDC-4F7C-BA53-D6AB490A9444",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t45:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DCB1A254-DA3C-4032-B2C6-C9EBCE8EC15E",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t55:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D3562304-0317-4A3C-B622-D5CE01CC97F9",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t70:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "327BA50A-366A-4367-93B8-328EC0136FA7",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t80:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D92ABD52-20F6-4AB1-801F-9E7B7B1B78A1",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:firebox_t85:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3552F3BB-8021-4E87-987D-870699A7E619",
                    "vulnerable": false
                  },
                  {
                    "criteria": "cpe:2.3:h:watchguard:fireboxv:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "4ECAE1D7-9868-4730-B645-44CB1B6FDE96",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A path traversal vulnerability in the Fireware OS Web UI on WatchGuard Firebox systems may allow a privileged authenticated remote attacker to execute arbitrary code in the context of an elevated system process."
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad de salto de ruta en la interfaz de usuario web (Web UI) de Fireware OS en sistemas WatchGuard Firebox puede permitir a un atacante remoto autenticado y privilegiado ejecutar c\u00f3digo arbitrario en el contexto de un proceso de sistema con privilegios elevados. Este problema afecta a Fireware OS 12.6.1 hasta la versi\u00f3n 12.11.8 inclusive y a 2025.1 hasta la versi\u00f3n 2026.1.2 inclusive."
          }
        ],
        "id": "CVE-2026-3987",
        "lastModified": "2026-10-26T21:10:00.170",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.2,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.2,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 8.6,
                "baseSeverity": "HIGH",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "HIGH",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-3987",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-02T00:00:00+00:00",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-04-01T22:16:21.350",
        "references": [
          {
            "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
            "tags": [
              "Broken Link"
            ],
            "url": "https://psirt.watchguard.com/CVE-2026-3987"
          },
          {
            "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00009"
          }
        ],
        "sourceIdentifier": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-22"
              }
            ],
            "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-04-02T22:54:54+00:00",
      "cve": "CVE-2026-3987",
      "id": "CVE-2026-3987",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "WatchGuard Firebox Arbitrary File Write vis Path Traversal in Fireware Web UI",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3987.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-3987",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-04-02T13:29:16.346048Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-04-02T13:29:22.158Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Fireware OS",
              "vendor": "WatchGuard",
              "versions": [
                {
                  "lessThan": "2026.2",
                  "status": "affected",
                  "version": "2025.1",
                  "versionType": "custom"
                },
                {
                  "lessThan": "12.12",
                  "status": "affected",
                  "version": "12.6.1",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "2026.2",
                      "versionStartIncluding": "2025.1",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "12.12",
                      "versionStartIncluding": "12.6.1",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ],
              "operator": "OR"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "btaol"
            }
          ],
          "datePublic": "2026-04-01T21:32:30.426Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A path traversal vulnerability in the Fireware OS Web UI on WatchGuard Firebox systems may allow a privileged authenticated remote attacker to execute arbitrary code in the context of an elevated system process."
            }
          ],
          "exploits": [
            {
              "lang": "en",
              "value": "WatchGuard is not aware of any exploitation of this issue in the wild."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "baseScore": 8.6,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                "version": "4.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-22",
                  "description": "CWE-22",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-10T16:46:12.527Z",
            "orgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
            "shortName": "WatchGuard"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://psirt.watchguard.com/CVE-2026-3987"
            },
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00009"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "value": "Fireware OS 2026.2, Fireware OS 12.12"
            }
          ],
          "title": "WatchGuard Firebox Arbitrary File Write vis Path Traversal in Fireware Web UI"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
        "assignerShortName": "WatchGuard",
        "cveId": "CVE-2026-3987",
        "datePublished": "2026-04-01T21:32:30.426Z",
        "dateReserved": "2026-03-11T15:01:46.222Z",
        "dateUpdated": "2026-08-10T16:46:12.527Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.