X.Org has 42 CVEs on record between 2023 and 2026. Disclosure cadence is accelerating: 28 in the last 90 days against 9 in the 90 before. The busiest recent month was September 2026 with 14. The median CVSS is 7.5 (high). None have a confirmed exploitation report. The dominant weakness classes are CWE-125 (13) and CWE-122 (11). Most affected products: x_server (14), xorg-x11-server (11), libXi (9).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 7.5
- Publish → KEV
- —
- Last 90 days
- 28 prev 9
Weakness classes
Products
- x_server 14
- xorg-x11-server 11
- libXi 9
- libX11 4
- libXtst 2
- libXpm 1
Worst active — by depth score
CVE-2026-88807High· 8.9A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.49CVE-2026-93523High· 7.8X.Org Server XInput2 PassiveUngrabDevice Out-of-Bounds Write43CVE-2026-93522High· 7.8X.Org Server Glamor CopyArea Heap Buffer Overflow43CVE-2026-93521High· 7.8X.Org Server RandR ChangeProviderProperty Heap Buffer Overflow43CVE-2026-93520High· 7.8X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write43
X.Org vulnerabilities
CVEs affecting X.Org, newest first. Open any entry for full detail, references, and exploit status.
42 CVEsRSS
CVE-2026-93522High· 7.8X.Org Server Glamor CopyArea Heap Buffer Overflow
A heap buffer overflow caused by mismatched size usage in CopyArea CPU-to-FBO path in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in the X server…
CVE-2026-93523High· 7.8X.Org Server XInput2 PassiveUngrabDevice Out-of-Bounds Write
A heap buffer overflow caused by a XIPassiveUngrabDevice request with an out-of-range modifier value in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute co…
CVE-2026-93524Medium· 6.9X.Org Server XKB SetMap Key Width/Action Count Desync Out-Of-Bounds Read
A buffer overread in CheckKeySyms() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to leak small amounts of information from X server memory or potentially crash the X server.
CVE-2026-93536Medium· 5.3X.Org Server GestureBuildSprite Use-After-Free
A use after free caused by missing lifecycle management of gesture sprites in GestureBuildSprite() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash the X server or potentially…
CVE-2026-93520High· 7.8X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write
A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially exe…
CVE-2026-93521High· 7.8X.Org Server RandR ChangeProviderProperty Heap Buffer Overflow
A buffer overflow in RandR ChangeProviderProperty requests in X.Org X Server before 2.1.25 and XWayland before 24.4.14 could be used by authenticated X clients to crash or execute code within the X server context.
CVE-2026-93518High· 7.8X.Org Server XKB ResizeKeyType Numeric Truncation
An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited for crashes or potential code executio…
CVE-2026-93519High· 7.8X.Org Server XFixes Pointer Barrier Event List Buffer Overflow
A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.
CVE-2026-93515Medium· 6.8.Org Server Present Extension Use-After-Free
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.
CVE-2026-93516Medium· 5.5.Org Server XInput Passive Grab Use-After-Free
A use-after-free caused by lack of lifecycle management when adding / removing XInput master devices in X.org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X Clients to crash the X server or potential…
CVE-2026-88812High· 7.8X.Org Server XKB SetGeometry TextDoodad Double Free
A double free in XKB SetGeometryin X.Org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by attached clients to cause a crash or potentially code in the x server context.
CVE-2026-109088Medium· 6.5libXtst RECORD EnableContext Reply Endless Loop
A malicious X server could send malformed RECORD EnableContext reolies that can cause a X client using the parse_reply_call_callback function in libXtst before 1.2.6 to enter a endless loop.
CVE-2026-109090High· 7.5libXi XGetDeviceControl DEVICE_ENABLE Heap Buffer Overflow
A malicious X server could cause a heap overflow by injecting a large DEVICE_ENABLE reply when processed by libXi before 1.8.4.
CVE-2026-109089High· 7.5libXi XGetDeviceControl Control Type Mismatch Heap Buffer Overflow
A buffer overflow when handling DEVICE_RESOLUTION in libXi before 1.8.4 could overflow a heap, triggered by a malicious X server.
CVE-2026-94287Medium· 5.5A denial of service via unsigned underflow in libXpm's write path in libXpm before 3.5.19 could be used by local attackers to cause unbounded CPU usage and memory exhaustion.
A denial of service via unsigned underflow in libXpm's write path in libXpm before 3.5.19 could be used by local attackers to cause unbounded CPU usage and memory exhaustion.
CVE-2026-94282Medium· 5.6An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used by malicious X server to crash an attached X client.
An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used by malicious X server to crash an attached X client.
CVE-2026-94284Medium· 5.5An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
CVE-2026-94283Medium· 6.5An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
CVE-2026-94285Medium· 5.1An out-of-bounds read in libX11's byte-oriented codeset parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
An out-of-bounds read in libX11's byte-oriented codeset parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
CVE-2026-94286High· 7.1An out-of-bounds read in libXtst's RECORD reply parser in libXtst before 1.2.6 could be used by malicious X servers to crash attached X clients.
An out-of-bounds read in libXtst's RECORD reply parser in libXtst before 1.2.6 could be used by malicious X servers to crash attached X clients.
CVE-2026-93542Medium· 6.5An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4 could be used by malicous servers to crash the X client.
An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4 could be used by malicous servers to crash the X client.
CVE-2026-93543High· 7.4An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
CVE-2026-93544Medium· 6.5An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.
An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.
CVE-2026-93545Medium· 6.5An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
CVE-2026-94281Medium· 6.5An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
CVE-2026-93541Medium· 6.5An out-of-bounds read in libXi's XQueryDeviceState() in libXi before 1.8.4 could be used by a
An out-of-bounds read in libXi's XQueryDeviceState() in libXi before 1.8.4 could be used by a
CVE-2026-88807High· 8.9A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.
CVE-2026-88806High· 7.5A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.
A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.
CVE-2026-50264High· 7.8An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat
An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds he…
CVE-2026-50263Medium· 5.5A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow()
A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.