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).
History

Tue, 31 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Tp-link tl-wr841n
Tp-link tl-wr841n Firmware
CPEs cpe:2.3:h:tp-link:tl-wr841n:14:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wr841n_firmware:*:*:*:*:*:*:*:*
Vendors & Products Tp-link tl-wr841n
Tp-link tl-wr841n Firmware
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Sat, 28 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 27 Mar 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link tl-wr841n V14
Vendors & Products Tp-link
Tp-link tl-wr841n V14

Thu, 26 Mar 2026 21:00:00 +0000

Type Values Removed Values Added
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).
Title Denial-of-Service Vulnerability in UPnP Component of TP Link's TL-WR841N
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 7.1, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: TPLink

Published: 2026-03-26T20:34:36.490Z

Updated: 2026-03-27T19:39:21.225Z

Reserved: 2026-03-06T00:09:48.566Z

Link: CVE-2026-3622

cve-icon Vulnrichment

Updated: 2026-03-27T19:30:53.009Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-26T21:17:09.697

Modified: 2026-03-31T19:09:04.387

Link: CVE-2026-3622

cve-icon Redhat

No data.