CVE-2026-50263: Use After Free in Red Hat Red Hat Enterprise Linux 10
CVE-2026-50263 is a use-after-free vulnerability in the X. Org X server and Xwayland components of Red Hat Enterprise Linux 10. The flaw occurs in the CreateSaverWindow() function, where a client can trigger a use-after-free read by changing window attributes and forcing the screen saver. This vulnerability can lead to information disclosure. The CVSS v3. 1 base score is 5. 5, indicating a medium severity level. There is no explicit vendor advisory statement about patch availability or mitigation in the provided content.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the CreateSaverWindow() function of the X.Org X server and Xwayland on Red Hat Enterprise Linux 10. A client with limited privileges can manipulate window attributes and activate the screen saver to cause a use-after-free read, potentially disclosing information. The CVSS vector indicates local attack vector with low complexity, requiring low privileges and no user interaction, impacting confidentiality but not integrity or availability.
Potential Impact
Successful exploitation of this vulnerability can result in unauthorized information disclosure due to a use-after-free read in the X server components. There is no indication of impact on system integrity or availability. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-50263 for current remediation guidance. Since no official fix or temporary workaround is stated in the provided advisory content, users should monitor the vendor advisory for updates and apply patches promptly once available.
CVE-2026-50263: Use After Free in Red Hat Red Hat Enterprise Linux 10
Description
CVE-2026-50263 is a use-after-free vulnerability in the X. Org X server and Xwayland components of Red Hat Enterprise Linux 10. The flaw occurs in the CreateSaverWindow() function, where a client can trigger a use-after-free read by changing window attributes and forcing the screen saver. This vulnerability can lead to information disclosure. The CVSS v3. 1 base score is 5. 5, indicating a medium severity level. There is no explicit vendor advisory statement about patch availability or mitigation in the provided content.
CVSS v3.1
Score 5.5medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the CreateSaverWindow() function of the X.Org X server and Xwayland on Red Hat Enterprise Linux 10. A client with limited privileges can manipulate window attributes and activate the screen saver to cause a use-after-free read, potentially disclosing information. The CVSS vector indicates local attack vector with low complexity, requiring low privileges and no user interaction, impacting confidentiality but not integrity or availability.
Potential Impact
Successful exploitation of this vulnerability can result in unauthorized information disclosure due to a use-after-free read in the X server components. There is no indication of impact on system integrity or availability. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-50263 for current remediation guidance. Since no official fix or temporary workaround is stated in the provided advisory content, users should monitor the vendor advisory for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-06-04T14:55:24.012Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-50263","vendor":"Red Hat"}]
Threat ID: 6a22b79be29bf47b50637ec0
Added to database: 6/5/2026, 11:48:43 AM
Last enriched: 6/5/2026, 12:04:10 PM
Last updated: 6/5/2026, 2:07:03 PM
Views: 88
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