CVE-2026-43943 Details
Description
electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to version 3.7.9, a code execution (RCE) vulnerability exists in electerm's SFTP open with system editor or "Edit with custom editor" feature. When a user opts to edit a file using open with system editor or open with a custom editor, the filename is passed directly into a command line without sanitization. A malicious actor controlling the SSH server or user OS can exploit this by crafting a filename containing shell metacharacters. If a victim subsequently attempts to edit this file, the injected commands are executed on their machine with the user's privileges. This could allow the attacker to run arbitrary code, install malware, or move laterally within the network. This issue has been patched in version 3.7.9.
A remote code execution vulnerability has been identified in Electerm versions prior to 3.7.9. The issue arises in the SFTP 'open with system editor' or 'Edit with custom editor' features. When a user selects to edit a file, the filename is transmitted directly to the command line without proper sanitization. This flaw can be exploited by a malicious actor controlling the SSH server or the user's operating system, who can craft a filename with shell metacharacters. If the user then attempts to edit the file, the injected commands are executed on their machine with the user's privileges. This exploitation could enable the attacker to run arbitrary code, install malware, or move laterally within the network.
Users can update to Electerm version 3.7.9 or later, where this vulnerability has been patched. Instructions for downloading the latest version are available on the Electerm GitHub Releases page.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 8, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
| CWE-88 | Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| electerm project electerm | < 3.7.9 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 8, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | New CVE Received | [email protected] |