CVE-2023-5574

A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.

• CWE-416
• CWE-416

• https://access.redhat.com/errata/RHSA-2024:2298
• https://access.redhat.com/security/cve/CVE-2023-5574Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2244735Issue Tracking, Third Party Advisory
• https://lists.x.org/archives/xorg-announce/2023-October/003430.htmlPatch, Vendor Advisory
• https://access.redhat.com/errata/RHSA-2024:2298
• https://access.redhat.com/security/cve/CVE-2023-5574Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2244735Issue Tracking, Third Party Advisory
• https://lists.x.org/archives/xorg-announce/2023-October/003430.htmlPatch, Vendor Advisory
• https://security.netapp.com/advisory/ntap-20231130-0004/

Published

Oct 25, 2023

Last Modified

Jun 23, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2023-5567The QR Code Tag plugin for WordPress is vulnerable to Stored…5.4
• CVE-2023-5568A heap-based Buffer Overflow flaw was discovered in Samba. I…6.5
• CVE-2023-5570Improper Protection for Outbound Error Messages and Alert Si…7.5
• CVE-2023-5571Improper Input Validation in GitHub repository vriteio/vrite…7.5
• CVE-2023-5572Server-Side Request Forgery (SSRF) in GitHub repository vrit…9.8
• CVE-2023-5573Allocation of Resources Without Limits or Throttling in GitH…6.5
• CVE-2023-5575 Improper access control in the permission inheritance in D…6.5
• CVE-2023-5576The Migration, Backup, Staging - WPvivid plugin for WordPres…9.3
• CVE-2023-5577The Bitly's plugin for WordPress is vulnerable to Stored Cro…5.4
• CVE-2023-5578A vulnerability was found in Portábilis i-Educar up to 2.7.5…5.4
• CVE-2023-5579A vulnerability was found in yhz66 Sandbox 6.1.0. It has bee…6.5
• CVE-2023-5580A vulnerability classified as critical has been found in Sou…9.8