{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-19845", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-08-14T08:04:34.036Z", "datePublished": "2026-08-14T17:00:09.847Z", "dateUpdated": "2026-08-14T17:37:51.259Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-08-14T17:00:09.847Z"}, "title": "TOTOLINK A800R lan.so cstecgi.cgi setStaticDhcpConfig 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": "TOTOLINK", "product": "A800R", "versions": [{"version": "4.1.2cu.5137_B20200730", "status": "affected"}], "cpes": ["cpe:2.3:o:totolink:a800r_firmware:*:*:*:*:*:*:*:*"], "modules": ["lan.so"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in TOTOLINK A800R 4.1.2cu.5137_B20200730. This affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. Executing a manipulation of the argument Comment can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 8.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P", "baseSeverity": "HIGH"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 8.8, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 9, "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-08-14T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-08-14T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-08-14T10:09:51.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "panda_0x1 (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/389981", "name": "VDB-389981 | TOTOLINK A800R lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/389981/cti", "name": "VDB-389981 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-19845", "name": "CVE-2026-19845 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/869454", "name": "Submit #869454 | Totolink A800R V4.1.2cu.5137_B20200730 Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setStaticDhcpConfig.md", "tags": ["exploit"]}, {"url": "https://www.totolink.net/", "tags": ["product"]}], "x_generator": ["VulDB PVTS v202608"]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-14T17:37:42.615277Z", "id": "CVE-2026-19845", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"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": "2026-08-14T17:37:51.259Z"}}]}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.1.2cu.5137_B20200730"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "A800R", "source": "cna", "vendor": "TOTOLINK"}, "product": "a800r", "vendor": "totolink"}], "created": "2026-08-14T18:30:07.320369+00:00", "updated": "2026-08-14T18:30:07.492377+00:00", "vendors": ["totolink", "totolink$PRODUCT$a800r"]}