High 7.8Published May 7, 2026

CVE-2026-43943electerm: RCE via malicious SSH server filename in openFileWithEditor

Updated under an hour ago (Oct 27, 2026, 2:23 PM ET)

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It affects electerm and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for electerm

Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78, CWE-88
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

electerm electerm electerm:electerm (from the name)	before 3.7.9	CNA record
electerm_project electerm electerm_project:electerm	before 3.7.9	NVD

References

References

https://github.com/electerm/electerm/security/advisories/GHSA-q4p8-8j9m-8hxj	x-refsource-confirm, patch, vendor-advisory
https://github.com/electerm/electerm/commit/24ce7103e264cffe6eb5476c0506a2379e6f8333	x-refsource-misc, patch
https://github.com/electerm/electerm/releases/tag/v3.7.9	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.