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CVE-2021-27198

9.8 · CRITICAL

An issue was discovered in Visualware MyConnection Server before v11.1a.

Published Feb 26, 2021CWE-434EPSS 13.62%

Overview

CVE-2021-27198 is a critical-severity vulnerability. It was published on February 26, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/161571/VisualWare-MyConnection-Server-11.x-Remote-Code-Execution.htmlRefseclists.org/fulldisclosure/2021/Feb/81Refmyconnectionserver.visualware.com/download.htmlRefmyconnectionserver.visualware.com/support/newrelease.htmlRefwww.securifera.com/advisories/cve-2021-27198/Refpacketstormsecurity.com/files/161571/VisualWare-MyConnection-Server-11.x-Remote-Code-Execution.htmlRefseclists.org/fulldisclosure/2021/Feb/81Refmyconnectionserver.visualware.com/download.htmlRefmyconnectionserver.visualware.com/support/newrelease.htmlRefwww.securifera.com/advisories/cve-2021-27198/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-27198?

CVE-2021-27198 is a critical-severity vulnerability. It was published on February 26, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2021-27198?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-27198?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-27198?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-27198 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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