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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-76650",
"assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
"state": "PUBLISHED",
"assignerShortName": "TPLink",
"dateReserved": "2026-08-19T15:49:30.548Z",
"datePublished": "2026-08-28T20:19:03.475Z",
"dateUpdated": "2026-08-31T18:37:11.079Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
"shortName": "TPLink",
"dateUpdated": "2026-08-28T20:19:03.475Z"
},
"title": "Pre-Authentication NULL Pointer Dereference in UPnP SOAP State Variable Query Processing in TP-Link TL-WR841N",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-476",
"description": "CWE-476 NULL pointer dereference",
"type": "CWE"
}
]
}
],
"impacts": [
{
"capecId": "CAPEC-153",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-153 Input Data Manipulation"
}
]
}
],
"affected": [
{
"vendor": "TP-Link System Inc.",
"product": "TL-WR841N v14",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "TL-WR841N(US)_V14_4.19 Build 260820 Rel.33478",
"versionType": "custom"
},
{
"status": "affected",
"version": "0",
"lessThan": "TL-WR841N(EU)_V14_4.19 Build 260821 Rel.56588",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "A NULL\npointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing\nSOAP state variable query requests. A specially crafted SOAP query may trigger\nunexpected termination or instability of the process hosting the UPnP service.\n\n\n\n\n\nSuccessful\nexploitation may result in a denial-of-service condition affecting UPnP\ndiscovery, state query, or related management functionality until the affected\nprocess is restarted or the device is rebooted.",
"supportingMedia": [
{
"type": "text/html",
"base64": false,
"value": "<p><span>A NULL\npointer dereference vulnerability exists in&nbsp;</span><span>TL-WR841N v14</span><span>&nbsp;in</span><span>&nbsp;the UPnP service when processing\nSOAP state variable query requests. A specially crafted SOAP query may trigger\nunexpected termination or instability of the process hosting the UPnP service.</span></p><div>\n\n<p>Successful\nexploitation may result in a denial-of-service condition affecting UPnP\ndiscovery, state query, or related management functionality until the affected\nprocess is restarted or the device is rebooted.</p></div>"
}
]
}
],
"references": [
{
"url": "https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware",
"tags": [
"patch"
]
},
{
"url": "https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware",
"tags": [
"patch"
]
},
{
"url": "https://www.tp-link.com/us/support/faq/5270/",
"tags": [
"vendor-advisory"
]
}
],
"metrics": [
{
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
],
"cvssV4_0": {
"attackVector": "ADJACENT",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "LOW",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "MEDIUM",
"baseScore": 5.3,
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
}
}
],
"credits": [
{
"lang": "en",
"value": "Jincheng Wang (@winmt) from Nanjing University of Posts and Telecommunications",
"type": "finder"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 1.0.5"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-31T18:36:59.443811Z",
"id": "CVE-2026-76650",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-08-31T18:37:11.079Z"
}
}
]
}
}