CVE-2020-1027: Microsoft Windows Kernel Privilege Escalation Vulnerability
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.
CSIRTS triage
- What
- An elevation of privilege vulnerability exists in the Windows Kernel's handling of objects in memory.
- Who is affected
- Users of Microsoft Windows are affected by this vulnerability.
- Urgency
- Remediation is critical due to active exploitation and high severity.
- Action
- Apply the latest security updates for Windows.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-1027
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2020-1027Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 90% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2020-1027 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Microsoft Windows Kernel
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalexploitedCVE-2025-21335: Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerabilitycisa-kev · 2025-01-14
- criticalexploitedCVE-2025-21334: Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerabilitycisa-kev · 2025-01-14
- criticalexploitedCVE-2025-21333: Microsoft Windows Hyper-V NT Kernel Integration VSP Heap-based Buffer Overflow Vulnerabilitycisa-kev · 2025-01-14
- criticalexploitedCVE-2024-35250: Microsoft Windows Kernel-Mode Driver Untrusted Pointer Dereference Vulnerabilitycisa-kev · 2024-12-16
- criticalexploitedCVE-2024-30088: Microsoft Windows Kernel TOCTOU Race Condition Vulnerabilitycisa-kev · 2024-10-15
- criticalexploitedCVE-2024-38106: Microsoft Windows Kernel Privilege Escalation Vulnerabilitycisa-kev · 2024-08-13
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