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TI-2026-51363 Aliases CVE-2026-73226

Electerm WebSocket `upgrade-func` and `fs` handlers allow arbitrary method/function…

Priority MEDIUM 41CWE-913Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.15.186, electerm allows an authenticated WebSocket client to invoke unintended internal functions through client-controlled func values in upgrade-func in src/app/server/dispatch-center.js and handleFs in src/app/server/fs.js, exposing Upgrade and fsExport methods that can execute commands, open files, mutate the filesystem, or terminate the process. This issue is fixed in version 3.15.186.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00751 55th percentileScored 2026-11-07
Fix Fixed electerm (electerm): 3.15.186

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
electermelectermbefore 3.15.1863.15.186Patch availableCNA
  • electerm Vendorelecterm Affected before 3.15.186 Fixed in 3.15.186 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:electerm_project:electerm:*:*:*:*:*:*:*:*——electerm
  • cpe:2.3:a:electerm_project:electerm:*:*:*:*:*:*:*:* Versions — — ·electerm

Remediation

  • Fix · CNA electerm (electerm) Fixed in 3.15.186

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73226

References

Other 4

  • TI-2020-14501 An issue was discovered in Electerm 1.3.22, allows attackers to execute arbitrary code… CVSS 3.1CRITICAL 9.8
  • TI-2026-36449 electerm: Path Traversal in Zmodem and Trzsz Download Filename Handling CVSS 3.1HIGH 7.1
  • TI-2026-30086 electerm has Command Injection Vulnerability via runMac function CVSS 3.1CRITICAL 9.8
  • TI-2026-30087 electerm has Command Injection Vulnerability via runLinux function CVSS 3.1CRITICAL 9.8
  • TI-2026-31998 Unvalidated shell.openExternal in electerm allows arbitrary protocol execution via terminal link click CVSS 3.1CRITICAL 9.6
  • TI-2026-32907 electerm: Import unsafe bookmark data could lead to unsafe operation when click local type bookmark CVSS 4.0CRITICAL 9.4
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences