FKIE_CVE-2026-45542

Vulnerability from fkie_nvd - Published: 2026-06-10 02:16 - Updated: 2026-07-23 09:10
Severity
7.1 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Summary
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a heap buffer overflow exists in the Security Scheme 2 (SRP6a) session-setup path of the protocomm component. The first-phase handler (handle_session_command0() in components/protocomm/src/security/security2.c) trusts the length of a client-supplied protobuf field for the SRP6a username and copies it into a buffer whose size is derived from a narrower destination type. The resulting truncation-versus-copy asymmetry corrupts the heap when an oversized value is supplied. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1.
References
security-advisories@github.comhttps://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4fPatch
security-advisories@github.comhttps://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0Patch
security-advisories@github.comhttps://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2Patch
security-advisories@github.comhttps://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961Patch
security-advisories@github.comhttps://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cfPatch
security-advisories@github.comhttps://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103Patch
security-advisories@github.comhttps://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jhMitigation, Patch, Vendor Advisory
Impacted products
Vendor Product Version
espressif esp-idf 5.2.6
espressif esp-idf 5.3.5
espressif esp-idf 5.4.4
espressif esp-idf 5.5.4
espressif esp-idf 6.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "esp-idf",
          "vendor": "espressif",
          "versions": [
            {
              "status": "affected",
              "version": "= 5.2.6"
            },
            {
              "status": "affected",
              "version": "= 5.3.5"
            },
            {
              "status": "affected",
              "version": "= 5.4.4"
            },
            {
              "status": "affected",
              "version": "= 5.5.4"
            },
            {
              "status": "affected",
              "version": "= 6.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:5.2.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "37A040C2-E9D4-4678-9A10-74B5AEE4901D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:5.3.5:*:*:*:*:*:*:*",
              "matchCriteriaId": "662FF5D0-F1CA-46B6-B574-46B2B1AE0C27",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:5.4.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "AFFE1121-2E19-45C4-A597-35E029748C99",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:5.5.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "2D53A845-578D-4153-BE97-B24E4B75F3BE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:6.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "F9D5D616-4CBC-480A-A7CF-4B80D7D3FA17",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a heap buffer overflow exists in the Security Scheme 2 (SRP6a) session-setup path of the protocomm component. The first-phase handler (handle_session_command0() in components/protocomm/src/security/security2.c) trusts the length of a client-supplied protobuf field for the SRP6a username and copies it into a buffer whose size is derived from a narrower destination type. The resulting truncation-versus-copy asymmetry corrupts the heap when an oversized value is supplied. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1."
    },
    {
      "lang": "es",
      "value": "ESF-IDF es el Framework de Desarrollo de Internet de las Cosas (IoT) de Espressif. En las versiones 5.2.6, 5.3.5, 5.4.4, 5.5.4 y 6.0, existe un desbordamiento de b\u00fafer de pila en la ruta de configuraci\u00f3n de sesi\u00f3n del Esquema de Seguridad 2 (SRP6a) del componente protocomm. El gestor de primera fase (handle_session_command0() en components/protocomm/src/security/security2.c) conf\u00eda en la longitud de un campo protobuf proporcionado por el cliente para el nombre de usuario SRP6a y lo copia en un b\u00fafer cuyo tama\u00f1o se deriva de un tipo de destino m\u00e1s estrecho. La asimetr\u00eda resultante de truncamiento versus copia corrompe la pila cuando se suministra un valor sobredimensionado. Este problema ha sido parcheado en las versiones 5.2.7, 5.3.6, 5.4.5, 5.5.5 y 6.0.1."
    }
  ],
  "id": "CVE-2026-45542",
  "lastModified": "2026-07-23T09:10:00.113",
  "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"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45542",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-10T15:16:06.919477Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-10T02:16:33.103",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.