{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-4902", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-03-26T15:57:49.630Z", "datePublished": "2026-03-26T22:30:14.537Z", "dateUpdated": "2026-03-26T22:30:14.537Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-03-26T22:30:14.537Z"}, "title": "Tenda AC5 POST Request addressNat fromAddressNat memory corruption", "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": "Tenda", "product": "AC5", "versions": [{"version": "15.03.06.47", "status": "affected"}], "cpes": ["cpe:2.3:o:tenda:ac5_firmware:*:*:*:*:*:*:*:*"], "modules": ["POST Request Handler"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in Tenda AC5 15.03.06.47. This affects the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. The manipulation of the argument page results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used."}], "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": "2026-03-26T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-03-26T01:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-03-26T17:03:08.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "wxhwxhwxh_mie (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/?id.353653", "name": "VDB-353653 | Tenda AC5 POST Request addressNat fromAddressNat memory corruption", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/?ctiid.353653", "name": "VDB-353653 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/?submit.777378", "name": "Submit #777378 | Tenda AC5 AC5 V1.0 V15.03.06.47 Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://lavender-bicycle-a5a.notion.site/Tenda_AC5_addressNat_page-32053a41781f8017938dda66f0193ebd?source=copy_link", "tags": ["exploit"]}, {"url": "https://www.tenda.com.cn/", "tags": ["product"]}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in Tenda AC5 15.03.06.47. This affects the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. The manipulation of the argument page results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used."}], "id": "CVE-2026-4902", "lastModified": "2026-03-26T23:16:21.090", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "COMPLETE", "baseScore": 9.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-03-26T23:16:21.090", "references": [{"source": "cna@vuldb.com", "url": "https://lavender-bicycle-a5a.notion.site/Tenda_AC5_addressNat_page-32053a41781f8017938dda66f0193ebd?source=copy_link"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/?ctiid.353653"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/?id.353653"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/?submit.777378"}, {"source": "cna@vuldb.com", "url": "https://www.tenda.com.cn/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "15.03.06.47"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "AC5", "source": "cna", "vendor": "Tenda"}, "product": "ac5", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-03-27T07:07:06.823996+00:00", "value": {"mitigation_remediation": ["Upgrade the router to the latest firmware released by Tenda that fixes the buffer overflow in the /goform/addressNat handler.", "If a firmware update is not immediately possible, block or restrict POST traffic to /goform/addressNat using the device\u2019s firewall or ACL to prevent remote exploitation.", "Monitor device logs for abnormal POST requests to the addressNat endpoint and investigate suspicious activity.", "Apply any vendor-released protective configuration changes or workarounds if provided in future advisories."], "summary": {"action": "Immediate Patch", "impact": "Potential Remote Code Execution via Buffer Overflow"}, "threat_synthesis": {"affected_systems": "Devices affected are Tenda AC5 routers running firmware version 15.03.06.47. The vulnerability is confined to the addressNat component of the web interface and does not extend to other Tenda products.", "description_and_impact": "A stack-based buffer overflow occurs when the fromAddressNat function in the /goform/addressNat POST handler processes the page parameter. The overflow can corrupt the stack and may enable an attacker to execute arbitrary code, compromising the device\u2019s confidentiality, integrity, and availability. The flaw is classified as CWE-119 and CWE-121.", "risk_and_exploitability": "With a CVSS base score of 8.7 the vulnerability is high severity. EPSS data is not available and the issue is not listed in the CISA KEV catalog, yet the public availability of the exploit and the fact that the attack can be performed over the network raise the likelihood of real\u2011world exploitation. Administrators should treat it as a priority risk."}}}}, "created": "2026-03-27T08:31:32.948230+00:00", "updated": "2026-03-27T09:22:58.375834+00:00", "vendors": ["tenda", "tenda$PRODUCT$ac5"]}