CVE-2026-3622

7.5 HIGH
Published: March 26, 2026 Modified: March 31, 2026
View on NVD

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.Β  This vulnerability affects TL-WR841N v14Β < EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) andΒ < US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Product
https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Product
https://www.tp-link.com/us/support/faq/5033/
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.0%
14th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

tp-link