CVE-2026-43943: electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client

Q: How do I fix CVE-2026-43943?

electerm: upgrade to 3.7.9. Exact commands for each OS are on this page.

Q: Is CVE-2026-43943 being exploited?

CVE-2026-43943 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-43943 affect?

CVE-2026-43943 affects electerm. Severity is high (CVSS 7.8). 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. W

Routine

HIGH 7.8UPGRADE

CVE-2026-43943 is a high-severity flaw (CVSS 7.8) affecting electerm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-78, CWE-88
Published	2026-05-08
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: electerm project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-08 04:16 UTCPublished CVE record published
2026-06-17 10:50 UTCUpdated Record last modified

electerm project electerm UPGRADE

Affected: < 3.7.9

Fixed in: 3.7.9

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy electerm || rpm -q electerm || electerm --version

2. UPGRADE to 3.7.9 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade electerm

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade electerm

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-43943?

electerm: upgrade to 3.7.9. Exact commands for each OS are on this page.

Is CVE-2026-43943 being exploited?

CVE-2026-43943 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-43943 affect?

CVE-2026-43943 affects electerm. Severity is high (CVSS 7.8). 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. W

How urgent is CVE-2026-43943?

Priority 29/100. High severity

Software pages

WinRM and RDP vulnerabilities

Related CVEs

CVE-2026-45787 CRITICAL 9.1 UPGRADE electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client
CVE-2026-45353 HIGH 7.8 UPGRADE electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client
CVE-2026-43944 CRITICAL 9.6 UPGRADE electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client
CVE-2026-43942 MEDIUM 5.5 UPGRADE electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client
CVE-2026-43941 CRITICAL 9.6 UPGRADE electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client

References

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