CVE-2026-43944: electerm Input Validation Flaw — Fix

Description

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. From versions 3.0.6 to before 3.8.15, electerm is vulnerable to arbitrary local code execution via deep links, CLI --opts, or crafted shortcuts. Exploit requires clicking a crafted electerm://... link or opening a crafted shortcut/command that launches electerm with attacker-controlled opts. This issue has been patched in version 3.8.15.

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CVSS v3.1 Score

9.6

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0015

Probability of exploitation

0.35%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-94 CWE-94

CWE-829 CWE-829

Affected Products

Vendor	Product	Versions
electerm_project	electerm	3.0.6 — 3.8.15

References

Advisories & Patches

https://github.com/electerm/electerm/commit/8a6a17951e96d715f5a231532bbd8303fe208700 https://github.com/electerm/electerm/commit/a79e06f4a1f0ac6376c3d2411ef4690fa0377742 https://github.com/electerm/electerm/security/advisories/GHSA-mpm8-cx2p-626q

Other References

https://github.com/electerm/electerm/commit/0599e67069b00e376a2e962649aaad6096e63507 https://github.com/electerm/electerm/releases/tag/v3.8.15

Frequently Asked Questions

What is CVE-2026-43944? +

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. From versions 3.0.6 to before 3.8.15, electerm is vulnerable to arbitrary local code execution via deep links, CLI --opts, or crafted shortcuts. Exploit requires clicking a crafted electerm://... link or opening a crafted shortcut/command that launches electerm with attacker-controlled opts. This issue has been patched in version 3.8.15. It has a CVSS v3.1 base score of 9.6 (CRITICAL).

How severe is CVE-2026-43944? +

CVE-2026-43944 has a CVSS v3.1 score of 9.6 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0015, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-43944? +

CVE-2026-43944 affects products from electerm_project, specifically: electerm. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-43944? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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