CVE-2026-3622

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).

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware	Product
https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware	Product
https://www.tp-link.com/us/support/faq/5033/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tp-link:tl-wr841n_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tp-link:tl-wr841n:14:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-26 21:17

Updated : 2026-06-17 10:43

NVD link : CVE-2026-3622

Mitre link : CVE-2026-3622

CVE.ORG link : CVE-2026-3622

JSON object : View

Products Affected

tp-link

tl-wr841n_firmware
tl-wr841n

CWE

CWE-125

Out-of-bounds Read

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