{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:espressif:esp-idf:5.2.7:*:*:*:*:*:*:*",
              "cpe:2.3:a:espressif:esp-idf:5.3.5:*:*:*:*:*:*:*",
              "cpe:2.3:a:espressif:esp-idf:5.4.4:*:*:*:*:*:*:*",
              "cpe:2.3:a:espressif:esp-idf:5.5.4:*:*:*:*:*:*:*",
              "cpe:2.3:a:espressif:esp-idf:6.0.1:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "5.2.7"
              },
              {
                "last_affected": "5.2.7"
              },
              {
                "introduced": "5.3.5"
              },
              {
                "last_affected": "5.3.5"
              },
              {
                "introduced": "5.4.4"
              },
              {
                "last_affected": "5.4.4"
              },
              {
                "introduced": "5.5.4"
              },
              {
                "last_affected": "5.5.4"
              },
              {
                "introduced": "6.0.1"
              },
              {
                "last_affected": "6.0.1"
              }
            ],
            "source": [
              "CPE_STRING",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "808b73fe9acf364b89e705234c1960ee3beaf295"
            },
            {
              "fixed": "2bf4dd12002dbae60a4b21abff010ecb2b8ee82b"
            },
            {
              "fixed": "2da2db43fd7e0bcff9e7b95f54f388296bb6f911"
            },
            {
              "fixed": "8b4b5d5301815198d177974ffc24848f47748248"
            },
            {
              "fixed": "9f713dbc94982d917f2d12964b233cd9efa4aeba"
            },
            {
              "fixed": "d51b1076092487e533eadf8b48c9c8579d3a6712"
            },
            {
              "fixed": "fba5f995436a3e3139f768b6d8f1a74d5ce1d318"
            }
          ],
          "repo": "https://github.com/espressif/esp-idf",
          "type": "GIT"
        }
      ],
      "versions": [
        "5.2.7",
        "5.3.5",
        "5.4.4",
        "5.5.4",
        "6.0.1",
        "= 5.2.7",
        "= 5.3.5",
        "= 5.4.4",
        "= 5.5.4",
        "= 6.0.1"
      ]
    }
  ],
  "aliases": [
    "GHSA-g764-gwc3-75m5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45160.json"
  },
  "details": "ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1, an out-of-bounds read flaw exists in the DHCP server option parser (parse_options() in components/lwip/apps/dhcpserver/dhcpserver.c) shipped with ESP-IDF's lwIP component. The parser walks the BOOTP/DHCP options field without validating that each option's length byte and declared payload length stay within the received packet buffer. A crafted DHCP request can cause the parser to read past the end of the options buffer into adjacent heap memory. The issue affects the DHCP server used by ESP-IDF's SoftAP and any configuration where the device runs as a DHCP server on a local network. This issue has been patched in versions 5.2.8, 5.3.6, 5.4.5, 5.5.5, and 6.0.2.",
  "id": "CVE-2026-45160",
  "modified": "2026-07-08T05:38:39.772736882Z",
  "published": "2026-06-10T00:26:34.381Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45160.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-g764-gwc3-75m5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45160"
    },
    {
      "type": "FIX",
      "url": "https://github.com/espressif/esp-idf/commit/2bf4dd12002dbae60a4b21abff010ecb2b8ee82b"
    },
    {
      "type": "FIX",
      "url": "https://github.com/espressif/esp-idf/commit/2da2db43fd7e0bcff9e7b95f54f388296bb6f911"
    },
    {
      "type": "FIX",
      "url": "https://github.com/espressif/esp-idf/commit/8b4b5d5301815198d177974ffc24848f47748248"
    },
    {
      "type": "FIX",
      "url": "https://github.com/espressif/esp-idf/commit/9f713dbc94982d917f2d12964b233cd9efa4aeba"
    },
    {
      "type": "FIX",
      "url": "https://github.com/espressif/esp-idf/commit/d51b1076092487e533eadf8b48c9c8579d3a6712"
    },
    {
      "type": "FIX",
      "url": "https://github.com/espressif/esp-idf/commit/fba5f995436a3e3139f768b6d8f1a74d5ce1d318"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ESF-IDF: Out-of-bounds Read in lwIP DHCP Server Option Parser"
}