VulnRadar

Data against noise.

Page generated: 11 Nov 2026, 07:54 UTC

CVE-2018-8589

An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys, aka "Windows Win32k Elevation of Privilege Vulnerability." This affects Windows Server 2008, Windows 7, Windows Server 2008 R2.

CVSS 7.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE

0.0/10

REALITY · THREAT PRIORITY

8.2/10

General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?

Recorded exploitation baseline: +7.00
Technical severity: CVSS 7.8: +1.17
Fresh EPSS: 3.02%: +0.02

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 10 documents and public datasets.

Hype components

Headline sample (25%)

0/100

Press, 30 days (60%)

0/100

Grounded branding (15%)

0/100

HYPE TOTAL0/100

Sources and documents

Securelist

Press · 15 Apr 2019, 07:00 · New zero-day vulnerability CVE-2019-0859 in win32k.sys - Securelist

Kaspersky

Press · 14 Mar 2019, 07:00 · CVE-2019-0797: Zero-day exploits keep coming - Kaspersky

Securelist

Press · 13 Mar 2019, 07:00 · The fourth horseman: CVE-2019-0797 vulnerability - Securelist

Securelist

Press · 12 Dec 2018, 08:00 · Zero-day in Windows Kernel Transaction Manager (CVE-2018-8611) - Securelist

IT Security Guru

Press · 12 Dec 2018, 08:00 · Kaspersky Lab Uncovers Third Windows Zero Day Exploit In Three Months. - IT Security Guru

See all 10 source documents

iTnews

Press · 14 Nov 2018, 08:00 · Microsoft closes actively exploited Windows zero-day - iTnews

Kaspersky

Press · 14 Nov 2018, 08:00 · CVE-2018-8589: Another day, another OS vulnerability - Kaspersky

Securelist

Press · 14 Nov 2018, 08:00 · A new exploit for zero-day vulnerability CVE-2018-8589 - Securelist

BleepingComputer

Press · 14 Nov 2018, 08:00 · Microsoft Patches Windows Zero-Day Exploited in Cyber Attacks - BleepingComputer

TechTarget

Press · 13 Nov 2018, 08:00 · Windows zero-day fix highlights November Patch Tuesday - TechTarget

Score evolution

● Hype ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.2 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence: Exploitation recorded
Priority basis: Recorded exploitation; CVSS 7.8; EPSS 3.0%
Attention, last 30 days: 0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential: local access, low privileges, no user interaction.
Observed activity: Exploitation recorded in CISA KEV.
Known scale: Not quantified.
Evidence confidence basis: Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:02.857210+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

First press mention

13 Nov 2018, 08:00

Published

14 Nov 2018, 01:00

Latest press mention

15 Apr 2019, 07:00

Added to the CISA KEV catalog

23 May 2022, 00:00

Score calculated

05 Nov 2026, 13:58