FKIE_CVE-2026-45542

Vulnerability from fkie_nvd - Published: 2026-06-10 02:16 - Updated: 2026-06-17 10:52
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
            },
            {
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              "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."
    }
  ],
  "id": "CVE-2026-45542",
  "lastModified": "2026-06-17T10:52:10.797",
  "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": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-10T15:16:06.919477Z",
          "version": "2.0.3"
        }
      }
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  "published": "2026-06-10T02:16:33.103",
  "references": [
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      "tags": [
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      "tags": [
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      "tags": [
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      "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"
    }
  ]
}


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