VulnerabilityModified
CVE-2021-26863
Windows Win32k Elevation of Privilege Vulnerability
HIGH 7.0EPSS 11.9%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 11.9%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
Windows Win32k Elevation of Privilege Vulnerability
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 11.94% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- microsoft/windows 10 · microsoft/windows server 2016 · microsoft/windows server 2019
- Source
- secure@microsoft.com
EPSS 11.9% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26863
- http://packetstormsecurity.com/files/161768/Microsoft-Windows-Kernel-NtGdiGetDeviceCapsAll-Race-Condition-Use-After-Free.htmlExploit, Third Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26863Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.