CVE-2026-113782 (GCVE-0-2026-113782)

Vulnerability from cvelistv5 – Published: 2026-11-04 18:59 – Updated: 2026-11-04 18:59
VLAI
Title
ESP-IDF: Stack-Based Out-of-Bounds Write in Thread Border Router ND6 Option Parsing
Summary
ESP-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.2.0 until 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.3, the OpenThread Border Router Neighbor Discovery packet handler trusts an attacker-controlled ICMPv6 option length while copying into a fixed stack buffer. A host on the same infrastructure link as the Border Router can send a crafted ICMPv6 Router Advertisement to its infrastructure interface whose oversized length causes an out-of-bounds write into adjacent stack memory. Firmware is affected only when CONFIG_OPENTHREAD_BORDER_ROUTER=y; Thread end devices, routers, and RCP firmware without the Border Router feature are unaffected. Exploitation requires no authentication or user interaction and can crash or reboot the device or corrupt adjacent stack state. This issue is fixed in versions 5.2.8, 5.3.6, 5.5.5, and 6.0.3 and is scheduled to be fixed in version 5.4.5.
Severity
7.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8081 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
espressif esp-idf Affected: >= 5.2.0, < 5.2.8
Affected: >= 5.3.0, < 5.3.6
Affected: >= 5.4.0, < 5.4.5
Affected: >= 5.5.0, < 5.5.5
Affected: >= 6.0.0, < 6.0.3
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "esp-idf",
          "vendor": "espressif",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 5.2.0, \u003c 5.2.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.3.0, \u003c 5.3.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.4.0, \u003c 5.4.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.5.0, \u003c 5.5.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 6.0.0, \u003c 6.0.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ESP-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.2.0 until 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.3, the OpenThread Border Router Neighbor Discovery packet handler trusts an attacker-controlled ICMPv6 option length while copying into a fixed stack buffer. A host on the same infrastructure link as the Border Router can send a crafted ICMPv6 Router Advertisement to its infrastructure interface whose oversized length causes an out-of-bounds write into adjacent stack memory. Firmware is affected only when CONFIG_OPENTHREAD_BORDER_ROUTER=y; Thread end devices, routers, and RCP firmware without the Border Router feature are unaffected. Exploitation requires no authentication or user interaction and can crash or reboot the device or corrupt adjacent stack state. This issue is fixed in versions 5.2.8, 5.3.6, 5.5.5, and 6.0.3 and is scheduled to be fixed in version 5.4.5."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121: Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-04T18:59:12.429Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/espressif/esp-idf/security/advisories/GHSA-c26h-gm53-qg83",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-c26h-gm53-qg83"
        },
        {
          "name": "https://github.com/espressif/esp-idf/commit/4068c4e7d061b3e2d6096734509feadc14594e28",
          "tags": [
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          "url": "https://github.com/espressif/esp-idf/commit/4068c4e7d061b3e2d6096734509feadc14594e28"
        },
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          "tags": [
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          ],
          "url": "https://github.com/espressif/esp-idf/commit/b6860b2db50406adf0aaebd75f2e9fe64cc805a9"
        },
        {
          "name": "https://github.com/espressif/esp-idf/commit/c22480ba07fc1de454a63d42275c764d95c7bd9c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/espressif/esp-idf/commit/c22480ba07fc1de454a63d42275c764d95c7bd9c"
        },
        {
          "name": "https://github.com/espressif/esp-idf/commit/c828d0d709f1c46fa2b9e1ed3ce9d8dc4b29c42f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/espressif/esp-idf/commit/c828d0d709f1c46fa2b9e1ed3ce9d8dc4b29c42f"
        },
        {
          "name": "https://github.com/espressif/esp-idf/commit/e18d27e480aec2b282898f4afc22b0f738ea7c04",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/espressif/esp-idf/commit/e18d27e480aec2b282898f4afc22b0f738ea7c04"
        },
        {
          "name": "https://github.com/espressif/esp-idf/commit/f9bb1be59081ccef03a1b4b1fab9a225f28b1b61",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/espressif/esp-idf/commit/f9bb1be59081ccef03a1b4b1fab9a225f28b1b61"
        }
      ],
      "source": {
        "advisory": "GHSA-c26h-gm53-qg83",
        "discovery": "UNKNOWN"
      },
      "title": "ESP-IDF: Stack-Based Out-of-Bounds Write in Thread Border Router ND6 Option Parsing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-113782",
    "datePublished": "2026-11-04T18:59:12.429Z",
    "dateReserved": "2026-10-20T17:39:41.372Z",
    "dateUpdated": "2026-11-04T18:59:12.429Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-113782",
      "date": "2026-11-06",
      "epss": "0.00282",
      "percentile": "0.20786"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "esp-idf",
                "vendor": "espressif",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 5.2.0, \u003c 5.2.8"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 5.3.0, \u003c 5.3.6"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 5.4.0, \u003c 5.4.5"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 5.5.0, \u003c 5.5.5"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 6.0.0, \u003c 6.0.3"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "ESP-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.2.0 until 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.3, the OpenThread Border Router Neighbor Discovery packet handler trusts an attacker-controlled ICMPv6 option length while copying into a fixed stack buffer. A host on the same infrastructure link as the Border Router can send a crafted ICMPv6 Router Advertisement to its infrastructure interface whose oversized length causes an out-of-bounds write into adjacent stack memory. Firmware is affected only when CONFIG_OPENTHREAD_BORDER_ROUTER=y; Thread end devices, routers, and RCP firmware without the Border Router feature are unaffected. Exploitation requires no authentication or user interaction and can crash or reboot the device or corrupt adjacent stack state. This issue is fixed in versions 5.2.8, 5.3.6, 5.5.5, and 6.0.3 and is scheduled to be fixed in version 5.4.5."
          }
        ],
        "id": "CVE-2026-113782",
        "lastModified": "2026-11-04T19:17:18.717",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                "version": "3.1"
              },
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              "impactScore": 4.2,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-11-04T19:17:18.717",
        "references": [
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            "source": "security-advisories@github.com",
            "url": "https://github.com/espressif/esp-idf/commit/4068c4e7d061b3e2d6096734509feadc14594e28"
          },
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            "source": "security-advisories@github.com",
            "url": "https://github.com/espressif/esp-idf/commit/b6860b2db50406adf0aaebd75f2e9fe64cc805a9"
          },
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            "source": "security-advisories@github.com",
            "url": "https://github.com/espressif/esp-idf/commit/c22480ba07fc1de454a63d42275c764d95c7bd9c"
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            "source": "security-advisories@github.com",
            "url": "https://github.com/espressif/esp-idf/commit/c828d0d709f1c46fa2b9e1ed3ce9d8dc4b29c42f"
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          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-c26h-gm53-qg83"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-121"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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