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Case File

CVE-2021-27198

CRITICAL · CVSS 9.8 EPSS 13.62% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-02-26 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Windows, Java. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 13.6% probability of exploitation in the next 30 days. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit remote code execution code execution
External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-27198
Severity
CRITICAL
CVSS
9.8
EPSS
13.62%
Windows Java

Original NVD Description

An issue was discovered in Visualware MyConnection Server before v11.1a. Unauthenticated Remote Code Execution can occur via Arbitrary File Upload in the web service when using a myspeed/sf?filename= URI. This application is written in Java and is thus cross-platform. The Windows installation runs as SYSTEM, which means that exploitation gives one Administrator privileges on the target system.

Related CVEs

Other vulnerabilities affecting the same vendor(s)