--- title: "CX-2021-4793" date: "2021-06-21T07:00:00+00:00" url: "https://checkmarx.com/zero/vulnerabilities/cx-2021-4793/" --- # CX-2021-4793 [Disclosed vulnerabilities](https://checkmarx.com/zero/vulnerabilities/) Fixed: May 3, 2021 CVE-2021-31800 **Published:** Jun 21, 2021 9.9 Critical Severity Arbitrary File Upload Crackmapexec honeypots Impacket Path-Traversal OI Omri Inbar Reported by Checkmarx Zero Details Overview ## Summary Impacket prior to version 0.9.23 is vulnerable to Path Traversal ## Product Impacket prior to 0.9.23 ## Impact If the vulnerability is exploited, an attacker could write files to any location on the affected computer. This could be elevated to an RCE in a variety of ways depending on the environment and the operating system. ## Steps to reproduce 1. For a full and detailed reproduction see: [Checkmarx Research Blogpost](https://www.checkmarx.com/blog/cve-2021-31800-how-we-used-impacket-to-hack-itself) ### Expected result: Files should only be listed and written to the intended work directory. ## Remediation This issue was fixed in version 0.9.23 through the [commit](https://github.com/SecureAuthCorp/impacket/commit/49c643bf66620646884ed141c94e5fdd85bcdd2f). ## Credit This issue was discovered and reported by Checkmarx Security Researcher [Omri Inbar](https://www.linkedin.com/in/omri-inbar-4629a6110/). ## Resources 1. [(cae2031)](https://github.com/SecureAuthCorp/impacket/commit/49c643bf66620646884ed141c94e5fdd85bcdd2f) 0 Critical Severity CVSS v3.1 Score 9.9 CVSS v3.1 Vectors- Attack Vector: Network - Attack Complexity: Low - Privileges Required: Low - User Interaction: None - Scope: Changed - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High Advisory Timeline1. Disclosed Apr 20, 2021 Notified the maintainer 2. Fixed May 3, 2021 Fix got released ## Explore more findings [27 Nov 2025 CVE-2025-34281 Stored Cross-Site Scripting (XSS) in ThingsBoard 6.2 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2025-34281/) [17 Jan 2025 CVE-2025-0825 HTTP Response Splitting in cpp-httplib 6.9 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2025-0825/) [17 Jun 2025 CVE-2025-6050 Stored Cross-Site Scripting (XSS) in Mezzanine CMS Admin Interface 4.8 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2025-6050/) [12 Dec 2024 CVE-2024-8374 Code Injection in UltiMaker Cura 7.8 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2024-8374/) [14 Nov 2024 CVE-2024-52526 Stored Cross-site Scripting in @LibreNMS/LibreNMS Services Tab 7.5 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2024-52526/) [14 Nov 2024 CVE-2024-51497 Stored Cross-site Scripting in @LibreNMS/LibreNMS Custom OID Tab 7.5 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2024-51497/) [14 Nov 2024 CVE-2024-51496 Reflected Cross-site Scripting in @LibreNMS/LibreNMS /wireless and /health endpoints 7.5 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2024-51496/) [ 14 Nov 2024 CVE-2024-51495 Stored Cross-site Scripting in @LibreNMS/LibreNMS Device Overview `overwrite\_ip` Field 7.5 Visit the page ](https://checkmarx.com/zero/vulnerabilities/cve-2024-51495/) [14 Nov 2024 CVE-2024-51494 Stored Cross-site Scripting in @LibreNMS/LibreNMS Port Settings 7.5 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2024-51494/) [14 Nov 2024 CVE-2024-50352 Stored Cross-site Scripting in @LibreNMS/LibreNMS Services Section of Device Overview 7.5 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2024-50352/) [14 Nov 2024 CVE-2024-50351 Reflected Cross-site Scripting in @LibreNMS/LibreNMS Logs Tab 7.5 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2024-50351/) [14 Nov 2024 CVE-2024-50350 Stored Cross-site Scripting in @LibreNMS/LibreNMS Port Settings Port Group 7.5 Visit the page](https://checkmarx.com/zero/vulnerabilities/cve-2024-50350/)