CVE-2026-21519
HIGH CISA KEV Actively ExploitedDesktop Window Manager Elevation of Privilege Vulnerability
CVSS v3
7.8
HIGH
EPSS Score
4.5%
exploit probability
CISA KEV
Yes
known exploited
Exploitation
active
SSVC status
Description
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CISA Known Exploited Vulnerability
- Date Added
- 2/10/2026
- Patch Due Date
- 3/3/2026
- Required Action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 2/10/2026
- Last Modified
- 2/11/2026
Frequently Asked Questions
What is CVE-2026-21519?
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Is CVE-2026-21519 actively exploited?
Yes. CVE-2026-21519 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 3/3/2026.
What is the CVSS score for CVE-2026-21519?
CVE-2026-21519 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string 3.1.
Is CVE-2026-21519 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.