{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8836", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-05-18T14:20:09.110Z", "datePublished": "2026-05-18T18:45:12.791Z", "dateUpdated": "2026-05-23T08:54:18.787Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-05-23T08:54:18.787Z"}, "title": "lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-121", "lang": "en", "description": "Stack-based Buffer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "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"]}], "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."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 9.3, "vectorString": "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", "baseSeverity": "CRITICAL"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:O/RC:C", "baseSeverity": "CRITICAL"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 9.8, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:O/RC:C", "baseSeverity": "CRITICAL"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 10, "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C/E:ND/RL:OF/RC:C"}}], "timeline": [{"time": "2026-05-18T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-05-18T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-05-20T05:23:35.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "0rbitingZer0 (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/364474", "name": "VDB-364474 | lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/364474/cti", "name": "VDB-364474 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/829798", "name": "Submit #829798 | lwIP 2.1.0 Stack-based Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://savannah.nongnu.org/bugs/?68194", "tags": ["broken-link"]}, {"url": "https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c", "tags": ["broken-link", "patch"]}, {"url": "https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c", "tags": ["patch"]}], "tags": ["x_open-source"]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-18T19:19:42.938168Z", "id": "CVE-2026-8836", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-18T19:20:22.909Z"}}]}}

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