CVE-2017-8591

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4.0%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Windows Input Method Editor (IME) in Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an remote code execution vulnerability when it fails to properly handle objects in memory, aka "Windows IME Remote Code Execution Vulnerability".

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
41
EG Risk 41/100CISA SSVC

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
Severity78% × 45%
Exploitation4% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
4.0%
EPSS %ILE
90th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 8, 2017

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Sep 26, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8591
generic

CVE-2017-8591 - PSIRT.COM

http://www.securityfocus.com/bid/99430

Vendor Advisories for CVE-2017-8591(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 21× 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.

Showing the most recent 100 of 174 total refreshes for this CVE.

  1. 2026-10-03 14:21 UTCEPSS rescore
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  3. 2026-09-30 14:59 UTCEPSS rescore
  4. 2026-09-30 09:42 UTCEG score recompute
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  1. 2026-08-30 19:13 UTCEPSS rescore
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  25. 2026-07-28 15:32 UTCEPSS rescore
  26. 2026-07-23 14:15 UTCEPSS rescore
  27. 2026-07-23 01:30 UTCEG score recompute
  28. 2026-07-22 22:10 UTCEG score recompute
  29. 2026-07-22 14:04 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2017-8591?
CVE-2017-8591 is a high vulnerability published on August 8, 2017. Windows Input Method Editor (IME) in Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an remote code execution vulnerability when it fails to properly handle objects in memory, aka "Windows IME Remote Code Execution…
When was CVE-2017-8591 disclosed?
CVE-2017-8591 was first published on August 8, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-8591 actively exploited?
CVE-2017-8591 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.0% probability of exploitation in the next 30 days (90th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-8591?
CVE-2017-8591 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2017-8591?
A fix for CVE-2017-8591 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2017-8591 are linked in the Vendor Advisories panel on this page.

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