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

Quick assessment

Affected
electerm electerm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Electerm是中国zxdong262个人开发者的一款基于 electron 开发的 SSH/SFTP 客户端。 electerm 3.7.9之前版本存在操作系统命令注入漏洞，该漏洞源于SFTP编辑功能中文件名未进行清理，可能导致攻击者通过包含shell元字符的文件名实现远程代码执行。

CVSS 7.8 · High EPSS 0.24% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
electerm electerm < 3.7.9 affected
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I. Basic Information for CVE-2026-43943

Vulnerability Information
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Vulnerability Title
electerm: RCE via malicious SSH server filename in openFileWithEditor
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Electerm 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Electerm是中国zxdong262个人开发者的一款基于 electron 开发的 SSH/SFTP 客户端。 electerm 3.7.9之前版本存在操作系统命令注入漏洞，该漏洞源于SFTP编辑功能中文件名未进行清理，可能导致攻击者通过包含shell元字符的文件名实现远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
electerm electerm < 3.7.9 -

II. Public POCs for CVE-2026-43943

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III. Intelligence Information for CVE-2026-43943

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Patches & Fixes for CVE-2026-43943 (1)

Vendor Advisories for CVE-2026-43943 (1)

Vendor Pages for CVE-2026-43943 (1)

Same Patch Batch · electerm · 2026-05-08 · 7 CVEs total

CVE-2026-41501 9.8 CRITICAL electerm has Command Injection Vulnerability via runLinux function
CVE-2026-41500 9.8 CRITICAL electerm has Command Injection Vulnerability via runMac function
CVE-2026-43941 9.6 CRITICAL Unvalidated shell.openExternal in electerm allows arbitrary protocol execution via termina
CVE-2026-43940 8.4 HIGH electerm: Path traversal in electerm runWidget leads to arbitrary code execution
CVE-2026-43942 5.5 MEDIUM electerm: Full process.env exposed to renderer via window.pre.env in electerm
CVE-2026-43944 electerm: dangerous code can be run through links or command line

IV. Related Vulnerabilities

Same product: electerm
Same vendor: electerm
Same weakness: CWE-78

V. Comments for CVE-2026-43943

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