Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Electerm Project | Electerm | < 3.7.9 |
Related Weaknesses (CWE)
References
- https://github.com/electerm/electerm/commit/24ce7103e264cffe6eb5476c0506a2379e6fPatch
- https://github.com/electerm/electerm/releases/tag/v3.7.9Release Notes
- https://github.com/electerm/electerm/security/advisories/GHSA-q4p8-8j9m-8hxjPatchVendor Advisory
FAQ
What is CVE-2026-43943?
CVE-2026-43943 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2026-43943?
CVE-2026-43943 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43943?
Check the references section above for vendor advisories and patch information. Affected products include: Electerm Project Electerm.