Is CVE-2026-3622 actively exploited?

No active exploitation of CVE-2026-3622 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3622 be exploited remotely?

Yes. CVE-2026-3622 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3622?

CVE-2026-3622 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-3622

HIGH

CVE-2026-3622

CWE-125Published: March 26, 2026· Updated: Mar 31, 2026

7.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.9th

Official 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).

NVD Source

Technical Analysis

CVE-2026-3622 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.