Page generated: 11 Nov 2026, 07:18 UTC
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CVE-2019-0859

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0685, CVE-2019-0803.

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: 4.19%: +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: 11 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

Hackread
Press · 03 Nov 2025, 08:00 · New Dante Spyware Linked to Rebranded Hacking Team, Now Memento Labs - Hackread
The Hacker News
Press · 02 Oct 2020, 07:00 · Researchers Fingerprint Exploit Developers Who Help Several Malware Authors - The Hacker News
Check Point Research
Press · 02 Oct 2020, 07:00 · Graphology of an Exploit – Hunting for exploits by looking for the author’s fingerprints - Check Point Research
Google Cloud
Press · 06 Apr 2020, 07:00 · Zero-Day Exploitation Increasingly Demonstrates Access to Money, Rather than Skill — Intelligence for Vulnerability Management, Part One - Google Cloud
Kaspersky
Press · 23 Jan 2020, 08:00 · RIP Windows 7. What now? - Kaspersky
See all 11 source documents
Cisco Talos Blog
Press · 03 Sep 2019, 07:00 · Vulnerability Spotlight: Two vulnerabilities in Epignosis eFront - Cisco Talos Blog
Centre for Cybersecurity Belgium
Press · 17 Apr 2019, 07:00 · Local Privilege escalation vulnerability in Windows OS - Centre for Cybersecurity Belgium
Kaspersky
Press · 15 Apr 2019, 07:00 · CVE-2019-0859: A zero-day vulnerability in Windows - Kaspersky
Securelist
Press · 15 Apr 2019, 07:00 · New zero-day vulnerability CVE-2019-0859 in win32k.sys - Securelist
TechTarget
Press · 09 Apr 2019, 07:00 · April Patch Tuesday closes 2 zero-day exploits - TechTarget
The Hacker News
Press · 09 Apr 2019, 07:00 · Microsoft Releases April 2019 Security Updates — Two Flaws Under Active Attack - The Hacker News

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

0

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 4.2%
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
09 Apr 2019, 07:00
Published
09 Apr 2019, 20:19
Added to the CISA KEV catalog
03 Nov 2021, 00:00
Latest press mention
03 Nov 2025, 08:00
Score calculated
05 Nov 2026, 13:58