01 Record
CVE-2020-1054
Win32k Elevation of Privilege Vulnerability
HighKEVPUBLISHEDCNA: microsoft
CNA base score7.0 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
02 Description
Win32k Elevation of Privilege Vulnerability
03 Exploitation and scoring
- Exploitation
- Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2021-11-03. Federal remediation due 2022-05-03.
- SSVC decision
- ExploitationactiveCISA reports credible evidence of active exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 53.87% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 98.9% of scored records. A rank, not a probability.
- NVD base score
- 7.0 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-10-08.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-05-21 22:52Z6 YR AGO
- Last updated
- 2026-10-07 17:30Z21 DAYS AGO
- Reserved
- 2019-11-04
- Assigning CNA
- microsoft
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.0)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.2
- Document digest
- 7119164c9daba5b195c87fc1356fc46fbc160a738b977c0d28b8d63f568dc849
05 Affected products
VendorProductVersionsPlatforms
MicrosoftWindows 10 Version 180310.0.0 to < publication32-bit Systems, ARM64-based Systems, x64-based Systems
MicrosoftWindows 10 Version 180910.0.17763.0 to < publication, 10.0.0 to < publication32-bit Systems, x64-based Systems, ARM64-based Systems
MicrosoftWindows 10 Version 190910.0.0 to < publication32-bit Systems, ARM64-based Systems, x64-based Systems
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)6.1.7601.0 to < publicationx64-based Systems
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0 to < publication32-bit Systems, x64-based Systems
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)6.0.6003.0 to < publication32-bit Systems, x64-based Systems
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to < publicationx64-based Systems
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to < publicationx64-based Systems
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to < publicationx64-based Systems
MicrosoftWindows Server, version 1803 (Server Core Installation)10.0.0 to < publicationx64-based Systems
MicrosoftWindows Server, version 1903 (Server Core installation)10.0.0 to < publicationx64-based Systems
MicrosoftWindows Server, version 1909 (Server Core installation)10.0.0 to < publicationx64-based Systems
06 References
- msrc.microsoft.comWin32k Elevation of Privilege Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1054
- portal.msrc.microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1054
- packetstormsecurity.comhttp://packetstormsecurity.com/files/160515/Microsoft-Windows-DrawIconEx-Local-Privilege-Escalation.html
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1054