Denial-of-Service Vulnerability in UPnP Component of TP Link’s TL-WR841N_CVE-2026-3622

{
    "lastseen": "",
    "description": "The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service.  \n\nSuccessful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition.\u00a0\nThis vulnerability affects TL-WR841N v14\u00a0< EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and\u00a0< US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).",
    "published": "2026-03-26T20:34:36.490Z",
    "modified": "2026-03-27T19:39:21.225Z",
    "type": "cve",
    "title": "Denial-of-Service Vulnerability in UPnP Component of TP Link's TL-WR841N",
    "source": "TPLink",
    "references": "https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware\nhttps://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware\nhttps://www.tp-link.com/us/support/faq/5033/",
    "id": "CVE-2026-3622",
    "bulletinFamily": "",
    "cwe": [
        "CWE-125"
    ],
    "cvelist": null,
    "sourceData": "TP-Link Systems Inc. TL-WR841N v14 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.1,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "TL-WR841N v14",
    "version": "0",
    "vendor": "TP-Link Systems Inc.",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}