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electerm CVE-2026-86711

| EUVDEUVD-2026-72687 HIGH
Exposed Dangerous Method or Function (CWE-749)
2026-09-08 VulnCheck GHSA-hxxx-8rvv-qg5m
7.5
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
7.5 HIGH
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.1 HIGH

Renderer compromise prerequisite makes AV:L/AC:H appropriate; scope changes from renderer sandbox to main-process OS execution (S:C); PR:N as no system privileges needed.

3.1 AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
4.0 AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

5
POC Analysis Generated
Sep 08, 2026 - 15:22 vuln.today
Metadata Corrected
Sep 08, 2026 - 12:40 vuln.today
tag: Information Disclosure removed
Source Code Evidence Fetched
Sep 08, 2026 - 11:52 vuln.today
Analysis Generated
Sep 08, 2026 - 11:52 vuln.today
CVE Published
Sep 08, 2026 - 11:23 cve.org
HIGH 7.5

DescriptionCVE.org

electerm before 5.3.15 exposes 40+ main-process functions through an unvalidated Electron IPC handler with no function-name allowlist or sender validation. Renderer-side script execution can invoke openFileWithEditor and other functions with arbitrary arguments to execute system commands in the main process.

AnalysisAI

Arbitrary OS command execution in electerm before 5.3.15 is achievable through a completely unvalidated Electron IPC bridge that exposes 40+ main-process functions - including openFileWithEditor and runGlobalAsync - to any renderer-side script without allowlisting function names or validating the sender's identity. An attacker who achieves renderer-side script execution (e.g., via XSS through malicious SSH server output or a compromised webview) can pivot directly into the main process and invoke system-level operations with no further authentication. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires that an attacker first achieve renderer-side script execution within the electerm application window. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 4.0 vector (AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H) reflects moderate-to-high complexity: local attack vector with an additional attack requirement (AT:P), meaning renderer-side script execution is a prerequisite. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade electerm to version 5.3.15 or later; this is confirmed by the tagged release at https://github.com/electerm/electerm/releases/tag/v5.3.15 and the patch commit at https://github.com/electerm/electerm/commit/b1f880534b8ae066c5d25bbf291ca7437e052750. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all systems and teams using electerm to assess organizational exposure and prioritize remediation. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-86711 vulnerability details – vuln.today

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