CVE-2026-86711

HIGHPre-NVD 7.47.4—
EchelonGraph scoreHIGH confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. a secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.4
EG Score
7.4(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity74% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 8, 2026

Advisory Details (7)

Auto-updated Sep 8, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
generic

electerm before 5.3.15 Arbitrary Command Execution via Unvalidated runGlobalAsync IPC Bridge | Advisories | VulnCheck

https://www.vulncheck.com/advisories/electerm-before-5.3.15-arbitrary-command-execution-via-unvalidated-runglobalasync-ipc-bridge
generic

GitHub - electerm/electerm: 📻Free and open-sourced terminal/ssh/sftp/ftp/telnet/serialport/RDP/VNC/Spice client(Linux, Mac, Windows, Android, HarmonyOS, iOS) · GitHub

https://github.com/electerm/electerm
generic

electerm/src/app/lib/ipc.js at v5.3.5 · electerm/electerm · GitHub

https://github.com/electerm/electerm/blob/v5.3.5/src/app/lib/ipc.js
github_release Patch Available

v5.3.15

Patch available: electerm/electerm v5.3.15

https://github.com/electerm/electerm/releases/tag/v5.3.15
github_commit

commit b1f880534b8a (electerm/electerm)

Fix landed in electerm/electerm commit b1f880534b8a — awaiting tagged release

https://github.com/electerm/electerm/commit/b1f880534b8ae066c5d25bbf291ca7437e052750
generic🟡 PoC Available

[Security Disclosure] IPC bridge runGlobalAsync missing function-name allowlist (separate from CVE-2026-43941) · Issue #4509 · electerm/electerm · GitHub

https://github.com/electerm/electerm/issues/4509
github Patch Available

IPC bridge runGlobalAsync missing function-name allowlist · Advisory · electerm/electerm · GitHub

https://github.com/electerm/electerm/security/advisories/GHSA-qc8j-6jr2-qr32

Vendor Advisories for CVE-2026-86711(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 26× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 03:07 UTCEG score recompute
  2. 2026-09-19 03:07 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 14:55 UTCGHSA enrichment
  5. 2026-09-18 02:43 UTCEG score recompute
  6. 2026-09-18 02:43 UTCGHSA enrichment
  7. 2026-09-17 19:32 UTCEPSS rescore
  8. 2026-09-17 14:31 UTCGHSA enrichment
  9. 2026-09-17 02:19 UTCEG score recompute
  10. 2026-09-17 02:18 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 14:06 UTCEG score recompute
  13. 2026-09-16 14:06 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-16 01:54 UTCGHSA enrichment
  16. 2026-09-15 13:42 UTCEG score recompute
  17. 2026-09-15 13:42 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 01:29 UTCGHSA enrichment
  21. 2026-09-14 13:17 UTCGHSA enrichment
  22. 2026-09-14 01:05 UTCEG score recompute
  23. 2026-09-14 01:05 UTCGHSA enrichment
  24. 2026-09-13 12:52 UTCGHSA enrichment
  25. 2026-09-13 00:40 UTCEG score recompute
Show 20 more
  1. 2026-09-13 00:40 UTCGHSA enrichment
  2. 2026-09-12 12:28 UTCGHSA enrichment
  3. 2026-09-12 00:15 UTCEG score recompute
  4. 2026-09-12 00:15 UTCGHSA enrichment
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 12:02 UTCEG score recompute
  8. 2026-09-11 12:02 UTCGHSA enrichment
  9. 2026-09-10 23:50 UTCGHSA enrichment
  10. 2026-09-10 11:25 UTCEG score recompute
  11. 2026-09-10 11:25 UTCGHSA enrichment
  12. 2026-09-09 23:12 UTCGHSA enrichment
  13. 2026-09-09 08:24 UTCGHSA enrichment
  14. 2026-09-08 20:12 UTCGHSA enrichment
  15. 2026-09-08 13:37 UTCEG score recompute
  16. 2026-09-08 13:37 UTCGHSA enrichment
  17. 2026-09-08 12:35 UTCEG score recompute
  18. 2026-09-08 12:34 UTCGHSA enrichment
  19. 2026-09-08 11:31 UTCEG score recompute
  20. 2026-09-08 11:30 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-86711?
CVE-2026-86711 is a high vulnerability published on September 8, 2026. 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…
When was CVE-2026-86711 disclosed?
CVE-2026-86711 was first published in the National Vulnerability Database on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86711 actively exploited?
CVE-2026-86711 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.6% of all scored CVEs.
What is the CVSS score of CVE-2026-86711?
CVE-2026-86711 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-86711?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86711, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-86711

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