# CVE-2026-93515: .Org Server Present Extension Use-After-Free CVE-2026-93515 is fixed in 32 products on 1 platform, first by DEBIAN-CVE-2026-93515, released October 12, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-93515 - Priority: High - CVSS: n/a (important) - EPSS: 0.0019 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 12, 2026 - Weakness: Use After Free - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93515 ## Description A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server context. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | tigervnc amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-debuginfo amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-debugsource amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-icons amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-license amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-selinux amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-server amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-server-debuginfo amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-server-minimal amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-server-minimal-debuginfo amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-server-module amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | tigervnc-server-module-debuginfo amzn 2023 | 1.14.1-3.amzn2023.0.7 | [ALAS2023-2026-3262](https://patchblox.com/security/data/fix/linux/alas2023-2026-3262.md) | Nov 7, 2026 | | Linux | xorg-server Debian 14 | 2:21.1.25-1 | [DEBIAN-CVE-2026-93515](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93515.md) | Oct 12, 2026 | | Linux | xorg-x11-server sles 15.6 | 21.1.11-150600.5.34.1 | [SUSE-SU-2026:4647-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4647-1.md) | Nov 7, 2026 | | Linux | xorg-x11-server sles 15.7 | 21.1.15-150700.5.25.1 | [SUSE-SU-2026:4646-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4646-1.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xephyr amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xephyr-debuginfo amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xnest amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xnest-debuginfo amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xorg amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xorg-debuginfo amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xvfb amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xvfb-debuginfo amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland amzn 2023 | 24.1.3-1.amzn2023.0.7 | [ALAS2023-2026-3261](https://patchblox.com/security/data/fix/linux/alas2023-2026-3261.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-debuginfo amzn 2023 | 24.1.3-1.amzn2023.0.7 | [ALAS2023-2026-3261](https://patchblox.com/security/data/fix/linux/alas2023-2026-3261.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-debugsource amzn 2023 | 24.1.3-1.amzn2023.0.7 | [ALAS2023-2026-3261](https://patchblox.com/security/data/fix/linux/alas2023-2026-3261.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-devel amzn 2023 | 24.1.3-1.amzn2023.0.7 | [ALAS2023-2026-3261](https://patchblox.com/security/data/fix/linux/alas2023-2026-3261.md) | Nov 7, 2026 | | Linux | xorg-x11-server-common amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-debuginfo amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-debugsource amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-devel amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xorg-x11-server-source amzn 2023 | 21.1.13-5.amzn2023.0.12 | [ALAS2023-2026-3260](https://patchblox.com/security/data/fix/linux/alas2023-2026-3260.md) | Nov 7, 2026 | | Linux | xwayland Debian 14 | 2:24.1.14-1 | [DEBIAN-CVE-2026-93515](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93515.md) | Oct 12, 2026 | | Linux | xwayland opensuse-leap 16.0 | 24.1.6-160000.7.1 | [OPENSUSE-SU-2026:22085-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22085-1.md) | Nov 7, 2026 | | Linux | xwayland sles 15.7 | 24.1.5-150700.3.25.1 | [SUSE-SU-2026:4835-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4835-1.md) | Nov 7, 2026 | | Linux | xwayland sles 16.0 | 24.1.6-160000.7.1 | [SUSE-SU-2026:24230-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24230-1.md) | Nov 7, 2026 | --- Data as of 2026-11-09T07:25:28Z UTC. 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