CVE-2026-86711

Command execution via unvalidated Electron IPC bridge

Published Sep 8, 2026 · Updated Sep 8, 2026

Command execution in electerm before 5.3.15 allows local users to run system commands through a renderer-to-main-process IPC bridge. The runGlobalAsync handler in preload.js accepts an unvalidated function name and arbitrary arguments, exposing openFileWithEditor, which passes attacker-controlled input to child_process.spawn. Exploitation requires script execution in an electerm renderer and runs commands with the desktop application's main-process privileges.

CVSS severity7.5
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command execution in electerm before 5.3.15 allows local users to run system commands through a renderer-to-main-process IPC bridge. The runGlobalAsync handler in preload.js accepts an unvalidated function name and arbitrary arguments, exposing openFileWithEditor, which passes attacker-controlled input to child_process.spawn. Exploitation requires script execution in an electerm renderer and runs commands with the desktop application's main-process privileges.

The record

CVE
CVE-2026-86711
Published
Sep 8, 2026
Updated
Sep 8, 2026
Vendor
electerm
Product
electerm
Classifications
CWE-749, CWE-863, T1059
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.3.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

electerm · electermversion=0 <5.3.15

Published CVSS scores

7.5VulnCheckCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.9GitHubCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-749Exposed Dangerous Method or Function
CWE-863Incorrect Authorization
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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