CVE-2018-8589 (GCVE-0-2018-8589)
Vulnerability from cvelistv5 – Published: 2018-11-14 01:00 – Updated: 2025-10-21 23:45Summary
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.
Severity
7.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-07 16:23 UTC
CWE
- Elevation of Privilege
- CWE-noinfo Not enough information
Assigner
References
4 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/105796 | vdb-entryx_refsource_BID |
| http://www.securitytracker.com/id/1042140 | vdb-entryx_refsource_SECTRACK |
| https://portal.msrc.microsoft.com/en-US/security-… | x_refsource_CONFIRM |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Windows Server 2008 |
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) |
guessed | |
| Microsoft | Windows 7 |
Affected:
32-bit Systems Service Pack 1
Affected: x64-based Systems Service Pack 1 |
guessed | |
| Microsoft | Windows Server 2008 R2 |
Affected:
Itanium-Based Systems Service Pack 1
Affected: x64-based Systems Service Pack 1 Affected: x64-based Systems Service Pack 1 (Server Core installation) |
guessed |
Date Public
2018-11-13 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 6f30cc3e-0425-43fe-9199-65951f3291da
Exploited: Yes
Timestamps
First Seen: 2022-05-23
Asserted: 2022-05-23
Scope
Notes: KEV entry: Microsoft Win32k Privilege Escalation Vulnerability | Affected: Microsoft / Win32k | Description: 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. | Required action: Apply updates per vendor instructions. | Due date: 2022-06-13 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2018-8589
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Win32k |
| Due Date | 2022-06-13 |
| Date Added | 2022-05-23 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Win32k Privilege Escalation Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:27 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 7078601e-f604-4549-bad8-8d48c9efc7b9
Exploited: Yes
Timestamps
First Seen: 2022-05-23
Asserted: 2022-05-23
Scope
Notes: KEVIntel entry: An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys, aka "Windows Win32k Elevation of Privilege... | Affected: Microsoft / Windows Server 2008, Windows 7, Windows Server 2008 R2 | CVSS: 7.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys, aka "Windows Win32k Elevation of Privilege... |
| Vendor | Microsoft |
| Product | Windows Server 2008, Windows 7, Windows Server 2008 R2 |
| Added Date | 2022-05-23T00:00:00.000Z |
| Cvss Score | 7.8 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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