CVE-2026-86711
electerm before 5.3.15 Arbitrary Command Execution via Unvalidated runGlobalAsync IPC Bridge
Description
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.
INFO
Published Date :
Sept. 8, 2026, 12:16 p.m.
Last Modified :
Sept. 8, 2026, 7:56 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Electerm to version 5.3.15 or later.
- Validate IPC handler arguments.
- Implement sender validation for IPC calls.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-86711.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-86711 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-86711
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-86711 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-86711 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 08, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-86711', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-09-08T12:17:21.327129Z'} -
New CVE Received by [email protected]
Sep. 08, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 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 Added CVSS V3.1 AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-749 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/86xxx/CVE-2026-86711.json">CVE-2026-86711</a> Added Reference https://github.com/electerm/electerm Added Reference https://github.com/electerm/electerm/blob/v5.3.5/src/app/lib/ipc.js Added Reference https://github.com/electerm/electerm/commit/b1f880534b8ae066c5d25bbf291ca7437e052750 Added Reference https://github.com/electerm/electerm/issues/4509 Added Reference https://github.com/electerm/electerm/releases/tag/v5.3.15 Added Reference https://github.com/electerm/electerm/security/advisories/GHSA-qc8j-6jr2-qr32 Added Reference https://www.vulncheck.com/advisories/electerm-before-5.3.15-arbitrary-command-execution-via-unvalidated-runglobalasync-ipc-bridge