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I. Basic Information for CVE-2026-3622
Vulnerability Information

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Vulnerability Title
Denial-of-Service Vulnerability in UPnP Component of TP Link's TL-WR841N
Source: NVD (National Vulnerability Database)
Vulnerability 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. Successful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition.  This vulnerability affects TL-WR841N v14 < EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and < US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
TP-LINK TL-WR841N 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-LINK TL-WR841N是中国普联(TP-LINK)公司的一款无线路由器。 TP-LINK TL-WR841N v14 EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303)之前版本和US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304)之前版本存在安全漏洞,该漏洞源于UPnP组件输入验证不当导致越界读取,可能导致UPnP服务崩溃并引发拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
TP-Link Systems Inc.TL-WR841N v14 0 ~ 0.9.1 4.19 -
II. Public POCs for CVE-2026-3622
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III. Intelligence Information for CVE-2026-3622
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IV. Related Vulnerabilities
V. Comments for CVE-2026-3622

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