Vendor
X.org vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 20 vulnerabilities in X.org: 6 in the last 7 days and 14 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-94281, was published on 24 September 2026. 2 technologies have a page of their own.
- Last 7 days
- 6
- Last 90 days
- 14
- 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-2026-94281: 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
- 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-2026-56000: X.Org xorg-server and xwayland heap use-after-free in GLX CommonMakeCurrentinfoCVSS 9
- CVE-2026-55999: X.Org xorg-server and xwayland heap buffer overflow in glamor font atlashighCVSS 8.5
- CVE-2026-4367: X.Org libXpm out-of-bounds read in xpmNextWordmediumCVSS 5.5
- CVE-2026-50263: X.Org X server and Xwayland use-after-free in CreateSaverWindowmediumCVSS 5.5
- CVE-2025-62230: X.Org X server use-after-free in Xkb client resource removalhighCVSS 7.3EPSS 0.3%
- CVE-2025-62231: X.Org X server integer overflow in XkbSetCompatMaphighCVSS 7.3EPSS 0.3%
- CVE-1999-0965: X.Org xterm race condition in logging optionmediumCVSS 6.2
- CVE-1999-0526: X.Org X Server access control bypass via insecure xhost configurationcriticalCVSS 10
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-2026-88806: libX11 buffer overflow in XkbGetMap key_sym_map handlinghighCVSS 7.5EPSS 0.3%
- CVE-2026-93543: libXi out-of-bounds read in XI2 class parserhighCVSS 7.4EPSS 0.3%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 5 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 1 | 0 | |
| 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 |
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, 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, 26 September 2026.