Vendor
X.org vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 35 vulnerabilities in X.org: 0 in the last 7 days and 23 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-93536, was published on 28 October 2026. 13 vulnerabilities in the last four weeks, up 63% on the four before (8). 6 technologies have a page of their own.
- Last 7 days
- 0
- Last 90 days
- 23
- Critical, all time
- 3
- Exploited in the wild
- 0
About X.org
X.Org is an open-source project that maintains the X Window System implementation.
X.org technologies
Latest X.org vulnerabilities
- CVE-2026-93536: X.Org X Server use after free in gesture sprite lifecyclemediumCVSS 5.3
- CVE-2026-93524: X.Org X Server buffer overread in CheckKeySymsinfo
- CVE-2026-93523: X.Org X Server heap buffer overflow in XIPassiveUngrabDevicehighCVSS 7.8
- CVE-2026-93522: X.Org X Server heap buffer overflow in CopyArea CPU-to-FBOhighCVSS 7.8
- CVE-2026-93521: X.Org X Server buffer overflow in RandR ChangeProviderPropertyhighCVSS 7.8
- CVE-2026-93520: X.org X server heap buffer overflow in XkbAllocNameshighCVSS 7.8
- CVE-2026-93519: X.Org X server buffer overflow in XFIXES pointer barriershighCVSS 7.8
- CVE-2026-93518: X.org X server integer truncation in XkbResizeKeyType heap buffer overflowhighCVSS 7.8
- CVE-2026-93517: X.org X server and XWayland heap buffer overflow in GLX RenderLargeinfo
- CVE-2026-93516: X.org X Server use-after-free in XInput device lifecyclemediumCVSS 5.5
- CVE-2026-93515: X.org X Server use-after-free in present_clear_window_notifiesinfo
- CVE-2026-109090: libXi heap overflow in DEVICE_ENABLE reply handlinghighCVSS 7.5
- CVE-2026-109089: libXi heap buffer overflow in DEVICE_RESOLUTION handlinghighCVSS 7.5
- CVE-2026-94284: libX11 out-of-bounds read in XIM trigger-key registration parsermediumCVSS 5.5
- CVE-2026-94283: libX11 out-of-bounds read in XIM attribute parsermediumCVSS 6.5
- CVE-2026-94281: libXi out-of-bounds read in XListInputDevices() class parsingmediumCVSS 6.5EPSS 0.2%
- CVE-2026-93544: libXi out-of-bounds read in XI2 XIQueryDevice reply parsingmediumCVSS 6.5EPSS 0.3%
- CVE-2026-93543: libXi out-of-bounds read in XI2 class parserhighCVSS 7.4EPSS 0.3%
- CVE-2026-93542: libXi out-of-bounds read in XI2 class parsingmediumCVSS 6.5EPSS 0.3%
- CVE-2026-93541: libXi out-of-bounds read in XQueryDeviceStatemediumCVSS 6.5EPSS 0.3%
- CVE-2026-88806: libX11 buffer overflow in XkbGetMap key_sym_map handlinghighCVSS 7.5EPSS 0.3%
- CVE-2026-59679: libXfont2 out-of-bounds heap access in fs_read_glyphs()criticalCVSS 9EPSS 0.4%
- CVE-2026-44950: X.Org libXfont2 heap buffer overflow in fs_read_glyphscriticalCVSS 9EPSS 0.4%
- CVE-2026-72693: X.Org openvt privilege escalation via TTY ownership race conditionhighCVSS 7.8EPSS 0.2%
- CVE-2026-56003: X.Org libXfont2 heap buffer overflow in ComputeScaledPropertieshighCVSS 8.5
Most severe X.org vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-1999-0526: X.Org X Server access control bypass via insecure xhost configurationcriticalCVSS 10
- CVE-2026-44950: X.Org libXfont2 heap buffer overflow in fs_read_glyphscriticalCVSS 9EPSS 0.4%
- CVE-2026-59679: libXfont2 out-of-bounds heap access in fs_read_glyphs()criticalCVSS 9EPSS 0.4%
- CVE-2026-56003: X.Org libXfont2 heap buffer overflow in ComputeScaledPropertieshighCVSS 8.5
- CVE-2026-56002: X.Org libXfont2 heap buffer overflow in pcfReadFonthighCVSS 8.5
- CVE-2026-56001: X.Org libXfont2 heap buffer overflow in BitmapScaleBitmapshighCVSS 8.5
- CVE-2026-55999: X.Org xorg-server and xwayland heap buffer overflow in glamor font atlashighCVSS 8.5
- CVE-2026-72693: X.Org openvt privilege escalation via TTY ownership race conditionhighCVSS 7.8EPSS 0.2%
- CVE-2026-93523: X.Org X Server heap buffer overflow in XIPassiveUngrabDevicehighCVSS 7.8
- CVE-2026-93522: X.Org X Server heap buffer overflow in CopyArea CPU-to-FBOhighCVSS 7.8
Vulnerabilities per week
13 vulnerabilities in the last four weeks, up 63% on the four before (8). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 2 | 2 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 6 | 0 | |
| 28 Sep 2026 | 2 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 13 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many X.org vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/x-org)<a href="https://junglewise.ai/threats/vendors/x-org"><img src="https://junglewise.ai/threats/vendors/x-org/badge.svg" alt="X.org vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/x-org.json, and this page as text at https://junglewise.ai/threats/vendors/x-org.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "X.org vulnerabilities", https://junglewise.ai/threats/vendors/x-org, 10 November 2026.