Exploitation evidence
Known exploited · CISA KEV listed
Added 2022-05-23. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2022-06-13. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Microsoft / Windows Server 2008
Default status: Not specified
- affected: 32-bit Systems Service Pack 2
- affected: 32-bit Systems Service Pack 2 (Server Core installation)
- affected: Itanium-Based Systems Service Pack 2
- affected: x64-based Systems Service Pack 2
- affected: x64-based Systems Service Pack 2 (Server Core installation)
Microsoft / Windows 7
Default status: Not specified
- affected: 32-bit Systems Service Pack 1
- affected: x64-based Systems Service Pack 1
Microsoft / Windows Server 2008 R2
Default status: Not specified
- affected: Itanium-Based Systems Service Pack 1
- affected: x64-based Systems Service Pack 1
- affected: x64-based Systems Service Pack 1 (Server Core installation)
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.03023,
"percentile": 0.87648
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.03023,
"percentile": 0.8757
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.03023,
"percentile": 0.87554
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.03023,
"percentile": 0.87547
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.03023,
"percentile": 0.87538
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.03023,
"percentile": 0.87519
}06 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
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}05 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
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"epss": 0.03023,
"percentile": 0.87508
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.03023,
"percentile": 0.87496
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.03023,
"percentile": 0.87476
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.03023,
"percentile": 0.8746
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2018-8589",
"cwes": [],
"dateAdded": "2022-05-23",
"dueDate": "2022-06-13",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2018-8589",
"product": "Win32k",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "A privilege escalation vulnerability exists when Windows improperly handles calls to Win32k.sys. An attacker who successfully exploited this vulnerability could run remote code in the security context of the local system.",
"vendorProject": "Microsoft",
"vulnerabilityName": "Microsoft Win32k Privilege Escalation Vulnerability"
}