CVE-2026-120241 (GCVE-0-2026-120241)

Vulnerability from cvelistv5 – Published: 2026-11-01 18:45 – Updated: 2026-11-01 18:45
VLAI
Title
Ruijie RG-ES205GC Local Firmware Upgrade httpupg.cgi buffer overflow
Summary
A vulnerability was identified in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP and RG-ES210GS-P ESW_1.0(1)B1P48. Impacted is an unknown function of the file httpupg.cgi of the component Local Firmware Upgrade Interface. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 83/100 over 3825 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Ruijie RG-ES205GC Affected: ESW_1.0(1)B1P48
    cpe:2.3:a:ruijie:rg-es205gc:*:*:*:*:*:*:*:*
Create a notification for this product.
Ruijie RG-ES206GC-P Affected: ESW_1.0(1)B1P48
    cpe:2.3:a:ruijie:rg-es206gc-p:*:*:*:*:*:*:*:*
Create a notification for this product.
Ruijie RG-ES208GC Affected: ESW_1.0(1)B1P48
    cpe:2.3:a:ruijie:rg-es208gc:*:*:*:*:*:*:*:*
Create a notification for this product.
Ruijie RG-ES210GC-LP Affected: ESW_1.0(1)B1P48
    cpe:2.3:a:ruijie:rg-es210gc-lp:*:*:*:*:*:*:*:*
Create a notification for this product.
Ruijie RG-ES210GS-P Affected: ESW_1.0(1)B1P48
    cpe:2.3:a:ruijie:rg-es210gs-p:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
seeker (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ruijie:rg-es205gc:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Local Firmware Upgrade Interface"
          ],
          "product": "RG-ES205GC",
          "vendor": "Ruijie",
          "versions": [
            {
              "status": "affected",
              "version": "ESW_1.0(1)B1P48"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ruijie:rg-es206gc-p:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Local Firmware Upgrade Interface"
          ],
          "product": "RG-ES206GC-P",
          "vendor": "Ruijie",
          "versions": [
            {
              "status": "affected",
              "version": "ESW_1.0(1)B1P48"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ruijie:rg-es208gc:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Local Firmware Upgrade Interface"
          ],
          "product": "RG-ES208GC",
          "vendor": "Ruijie",
          "versions": [
            {
              "status": "affected",
              "version": "ESW_1.0(1)B1P48"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ruijie:rg-es210gc-lp:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Local Firmware Upgrade Interface"
          ],
          "product": "RG-ES210GC-LP",
          "vendor": "Ruijie",
          "versions": [
            {
              "status": "affected",
              "version": "ESW_1.0(1)B1P48"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ruijie:rg-es210gs-p:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Local Firmware Upgrade Interface"
          ],
          "product": "RG-ES210GS-P",
          "vendor": "Ruijie",
          "versions": [
            {
              "status": "affected",
              "version": "ESW_1.0(1)B1P48"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "seeker (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was identified in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP and RG-ES210GS-P ESW_1.0(1)B1P48. Impacted is an unknown function of the file httpupg.cgi of the component Local Firmware Upgrade Interface. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 7.8,
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-01T18:45:15.676Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-429600 | Ruijie RG-ES205GC Local Firmware Upgrade httpupg.cgi buffer overflow",
          "tags": [
            "vdb-entry"
          ],
          "url": "https://vuldb.com/vuln/429600"
        },
        {
          "name": "VDB-429600 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/429600/cti"
        },
        {
          "name": "CVE-2026-120241 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-120241"
        },
        {
          "name": "Submit #1016041 | Ruijie Networks Co., Ltd. RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP, RG-ES210GS-P (sharing the same ESW firmware; NIS2100 series may also be aff ESW_1.0(1)B1P48, Release(12211919) Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/1016041"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-10-31T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-10-31T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-10-31T21:25:53.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Ruijie RG-ES205GC Local Firmware Upgrade httpupg.cgi buffer overflow",
      "x_generator": [
        "VulDB PVTS v202611"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-120241",
    "datePublished": "2026-11-01T18:45:15.676Z",
    "dateReserved": "2026-10-31T20:20:44.175Z",
    "dateUpdated": "2026-11-01T18:45:15.676Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-120241",
      "date": "2026-11-04",
      "epss": "0.00619",
      "percentile": "0.49778"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "cpes": [
                  "cpe:2.3:a:ruijie:rg-es205gc:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Local Firmware Upgrade Interface"
                ],
                "product": "RG-ES205GC",
                "vendor": "Ruijie",
                "versions": [
                  {
                    "status": "affected",
                    "version": "ESW_1.0(1)B1P48"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:ruijie:rg-es206gc-p:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Local Firmware Upgrade Interface"
                ],
                "product": "RG-ES206GC-P",
                "vendor": "Ruijie",
                "versions": [
                  {
                    "status": "affected",
                    "version": "ESW_1.0(1)B1P48"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:ruijie:rg-es208gc:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Local Firmware Upgrade Interface"
                ],
                "product": "RG-ES208GC",
                "vendor": "Ruijie",
                "versions": [
                  {
                    "status": "affected",
                    "version": "ESW_1.0(1)B1P48"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:ruijie:rg-es210gc-lp:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Local Firmware Upgrade Interface"
                ],
                "product": "RG-ES210GC-LP",
                "vendor": "Ruijie",
                "versions": [
                  {
                    "status": "affected",
                    "version": "ESW_1.0(1)B1P48"
                  }
                ]
              },
              {
                "cpes": [
                  "cpe:2.3:a:ruijie:rg-es210gs-p:*:*:*:*:*:*:*:*"
                ],
                "modules": [
                  "Local Firmware Upgrade Interface"
                ],
                "product": "RG-ES210GS-P",
                "vendor": "Ruijie",
                "versions": [
                  {
                    "status": "affected",
                    "version": "ESW_1.0(1)B1P48"
                  }
                ]
              }
            ],
            "source": "cna@vuldb.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A vulnerability was identified in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP and RG-ES210GS-P ESW_1.0(1)B1P48. Impacted is an unknown function of the file httpupg.cgi of the component Local Firmware Upgrade Interface. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way."
          }
        ],
        "id": "CVE-2026-120241",
        "lastModified": "2026-11-02T16:19:19.997",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 7.8,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 6.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "cna@vuldb.com",
              "type": "Secondary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "cna@vuldb.com",
              "type": "Primary"
            }
          ],
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 7.7,
                "baseSeverity": "HIGH",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "PROOF_OF_CONCEPT",
                "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": "NONE",
                "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:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/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": "NONE",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "cna@vuldb.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-11-01T19:16:59.393",
        "references": [
          {
            "source": "cna@vuldb.com",
            "url": "https://github.com/byseeker/Ruijie-RG-ES-Series-Switches_PreAuth_Boundary_Overflow_DoS"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/cve/CVE-2026-120241"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/submit/1016041"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/vuln/429600"
          },
          {
            "source": "cna@vuldb.com",
            "url": "https://vuldb.com/vuln/429600/cti"
          }
        ],
        "sourceIdentifier": "cna@vuldb.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              },
              {
                "lang": "en",
                "value": "CWE-120"
              }
            ],
            "source": "cna@vuldb.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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.