S4E just found a critical-severity finding from cve-2026-109618 php2shell scanner

CVE

CVE-2021-4463

8.7

CVSShigh

Exploitable remotely over the internet · no authentication required.

Description

Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the 'downloads' endpoint. The 'fileName' parameter is not properly sanitized, allowing attackers to craft traversal sequences and access sensitive files outside the intended directory.

Attack Vector

Network

Privileges Req.

None

User Interaction

None

bems api

Updated Oct 12, 2026View on NVD →

S4E scanner

highProduct Based Web Vulnerabilities~10 seconds

CVE-2021-4463 Scanner

CVE-2021-4463 Scanner - Arbitrary File Download vulnerability in Longjing Technology BEMS API

Used 2.1k times · 3.4k assets checked · url

Scanner page →Run scanner

CVE history: bems api

Predict next CVE date with AI

Monitor this CVE on your assets

S4E maps published CVEs to scanners and forecasts the next disclosure window for your stack.

Create a free account →