{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6631", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-04-19T17:05:44.163Z", "datePublished": "2026-04-20T10:45:12.978Z", "dateUpdated": "2026-04-20T15:07:58.242Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-04-20T10:45:12.978Z"}, "title": "Tenda F451 httpd webExcptypemanFilter fromwebExcptypemanFilter buffer overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-120", "lang": "en", "description": "Buffer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "affected": [{"vendor": "Tenda", "product": "F451", "versions": [{"version": "1.0.0.7_cn_svn7958", "status": "affected"}], "cpes": ["cpe:2.3:o:tenda:f451_firmware:*:*:*:*:*:*:*:*"], "modules": ["httpd"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in Tenda F451 1.0.0.7_cn_svn7958. Impacted is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter of the component httpd. Executing a manipulation of the argument page can lead to buffer overflow. The attack may be launched 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": "2026-04-19T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-04-19T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-04-19T19:11:01.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "jimi666 (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/358265", "name": "VDB-358265 | Tenda F451 httpd webExcptypemanFilter fromwebExcptypemanFilter buffer overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/358265/cti", "name": "VDB-358265 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/792904", "name": "Submit #792904 | Tenda F451_kfw_V1.0.0.7_cn_svn7958 V1.0.0.7 Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/Jimi-Lab/cve/issues/25", "tags": ["exploit", "issue-tracking"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-20T15:07:28.028739Z", "id": "CVE-2026-6631", "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": "2026-04-20T15:07:58.242Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0.0.7_cn_svn7958"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "F451", "source": "cna", "vendor": "Tenda"}, "product": "f451", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-20T12:20:55.594845+00:00", "value": {"mitigation_remediation": ["Update the device firmware to a version that addresses the fromwebExcptypemanFilter buffer overflow, as released by the vendor.", "Restrict access to the Tenda F451 web interface by limiting management traffic to a trusted IP range or by placing the device behind a firewall.", "If an immediate firmware update is not possible, block or filter requests to /goform/webExcptypemanFilter using a local firewall or configuration setting to prevent the exploitation vector."], "summary": {"action": "Apply Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Tenda F451 model with firmware version 1.0.0.7_cn_svn7958. The affected component is the httpd service accessed via /goform/webExcptypemanFilter.", "description_and_impact": "The vulnerability lies in the fromwebExcptypemanFilter function of the Tenda F451 httpd component. A malformed page argument triggers a buffer overflow, which may enable an attacker to execute arbitrary code on the device with privileges of the httpd process, compromising confidentiality, integrity, and availability of traffic handled by the device.", "risk_and_exploitability": "The CVSS score of 8.7 indicates high severity. No EPSS data is available and the vulnerability is not listed in the CISA KEV catalog. The attack can be launched remotely by sending a crafted request to the web form endpoint, as the exploit has been publicly disclosed. Given the lack of mitigation on typical consumer routers, the risk to exposed devices is significant."}}}}, "created": "2026-04-20T12:30:05.672221+00:00", "updated": "2026-04-20T12:30:05.852585+00:00", "vendors": ["tenda", "tenda$PRODUCT$f451"]}