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Fencer Vulns
high 7.8

CVE-2019-1458 kev+ ransomware in the critical feed json

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k…

published 2019-12-10 6 y ago modified 2026-08-12 2 mo ago also EUVD-2019-10015

cvss
7.8
version 3.1, CNA
cisa kev
Exploited
added 2022-01-10, used in ransomware
epss
74.4%
EPSS 74.4% chance of exploitation in 30 days, percentile 99.4%
public exploits
2
Metasploit, Exploit-DB

Summary

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'.

Patch / fix

cisa required action Apply updates per vendor instructions.

Timeline

  1. 0-day patched (Project Zero)
  2. First public exploit (Metasploit exploit/windows/local/cve_2019_1458_wizardopium)
  3. Published
  4. CISA SSVC: exploitation active
  5. Added to CISA KEV
  6. CISA patch deadline

Known exploited

Added
4 y ago
Patch by
2022-07-10 (4 y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply updates per vendor instructions.
Vendor, product
Microsoft, Win32k
CISA name
Microsoft Win32k Privilege Escalation Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2019-12-10
Details
project zero root cause analysis

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
4 y ago

Exploit prediction

74.44% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/windows/local/cve_2019_1458_wizardopium Microsoft Windows Uninitialized Variable Local Privilege Elevation metasploit exploit, normal rank, 2019-12-10
  • EDB-48180 Microsoft Windows - 'WizardOpium' Local Privilege Escalation local, 2020-03-03
  • packetstormsecurity.com http://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Microsoft Windows
  • Microsoft Windows Server

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.