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CVE-2021-33576

9.8 · CRITICAL
Published Jun 18, 2021 cleo CWE-22 EPSS 1.55% (73th pctl)

Overview

CVE-2021-33576 is a critical-severity vulnerability affecting cleo lexicom. It was published on June 18, 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 Cleo LexiCom 5.5.0.0. Within the AS2 message, the sender can specify a filename. This filename can include path-traversal characters, allowing the file to be written to an arbitrary location on disk.

Remediation

Check the references section for vendor advisories and patches from cleo. Update lexicom to the latest patched version. 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.

Affected Products

Vendor Product Versions Status

Frequently Asked Questions

What is CVE-2021-33576?

CVE-2021-33576 is a critical-severity vulnerability affecting cleo lexicom. It was published on June 18, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2021-33576?

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-2021-33576?

Check the references section for vendor advisories and patches from cleo. Update lexicom to the latest patched version. 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-2021-33576?

CyberStrike's AI-powered security agents can automatically detect CVE-2021-33576 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.