{"id":"CVE-2026-8836","state":"PUBLISHED","title":"lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow","description":"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. Two separate issue reports were submitted to the project. Their processing was merged as a duplicate.","publishedAt":"2026-05-18T18:45:12.791Z","updatedAt":"2026-08-22T08:42:12.843Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"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:P","source":"VulDB"},"assigner":"VulDB","products":["n/a lwIP"],"affected":[{"vendor":"n/a","product":"lwIP","versions":[{"version":"2.1.0","status":"affected"},{"version":"2.1.1","status":"affected"},{"version":"2.1.2","status":"affected"},{"version":"2.1.3","status":"affected"},{"version":"2.2.0","status":"affected"},{"version":"2.2.1","status":"affected"}],"cpes":["cpe:2.3:a:lwip:lwip:*:*:*:*:*:*:*:*"],"modules":["snmpv3 USM Handler"]}],"references":["https://vuldb.com/vuln/364474","https://vuldb.com/vuln/364474/cti","https://vuldb.com/cve/CVE-2026-8836","https://vuldb.com/submit/829798","https://savannah.nongnu.org/bugs/?68055","https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c","https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c","https://savannah.nongnu.org/bugs/?68194"],"weaknesses":["CWE-121","CWE-119"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/8xxx/CVE-2026-8836.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8836","state":"PUBLISHED","datePublished":"2026-05-18T18:45:12.791Z","dateUpdated":"2026-08-22T08:42:12.843Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-05-18T14:20:09.110Z"},"containers":{"cna":{"title":"lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow","descriptions":[{"lang":"en","value":"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. Two separate issue reports were submitted to the project. 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