{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
            }
          ],
          "repo": "https://cgit.git.savannah.gnu.org/cgit/lwip.git",
          "type": "GIT"
        },
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.1.0"
              },
              {
                "last_affected": "2.1.0"
              },
              {
                "introduced": "2.1.1"
              },
              {
                "last_affected": "2.1.1"
              },
              {
                "introduced": "2.1.2"
              },
              {
                "last_affected": "2.1.2"
              },
              {
                "introduced": "2.1.3"
              },
              {
                "last_affected": "2.1.3"
              },
              {
                "introduced": "2.2.0"
              },
              {
                "last_affected": "2.2.0"
              },
              {
                "introduced": "2.2.1"
              },
              {
                "last_affected": "2.2.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "e6a8415df332ee34d7af02255b2aa1e8ee74348f"
            },
            {
              "fixed": "0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
            }
          ],
          "repo": "https://github.com/lwip-tcpip/lwip",
          "type": "GIT"
        }
      ],
      "versions": [
        "2.1.0",
        "2.1.1",
        "2.1.2",
        "2.1.3",
        "2.2.0",
        "2.2.1"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulDB",
    "cwe_ids": [
      "CWE-119",
      "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8836.json"
  },
  "details": "A vulnerability was found in lwIP up to 2.2.1. Affected is the function snmp_parse_inbound_frame of the file src/apps/snmp/snmp_msg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue.",
  "id": "CVE-2026-8836",
  "modified": "2026-07-08T05:37:20.575020957Z",
  "published": "2026-05-18T18:45:12.791Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://savannah.nongnu.org/bugs/?68194"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8836.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8836"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/submit/829798"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/vuln/364474"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/364474/cti"
    },
    {
      "type": "FIX",
      "url": "https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow"
}