Is CVE-2026-3405 actively exploited?

No active exploitation of CVE-2026-3405 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3405 be exploited remotely?

Yes. CVE-2026-3405 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3405?

CVE-2026-3405 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2026-3405

CWE-22Published: March 2, 2026· Updated: Mar 3, 2026

8.1

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.5th

Official Description

A vulnerability has been found in thinkgem JeeSite up to 5.15.1. The affected element is an unknown function of the component Connection Handler. The manipulation leads to path traversal. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

NVD Source

Technical Analysis

CVE-2026-3405 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.