GHSA-x7p4-8jjf-qcp4 · Severity: medium — A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry...
A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server.
Conclusion & alert: CVE-2026-34000 is rated Low Risk (25/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-06 | — | 0.01% | — |
Full EPSS history (1 record total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.1 | MEDIUM |
|
1.8 | 4.2 | [email protected] |
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
GHSA-x7p4-8jjf-qcp4 · Severity: medium — A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-34000 not yet assigned priority: Debian including 2 source packages (xorg-server, xwayland), 9 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6, open 3. | https://security-tracker.debian.org/tracker/CVE-2026-34000 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-34000 |
suse
|
medium | CVE-2026-34000 severity moderate: SUSE including 36 source package names (xorg-x11-server, xorg-x11-server-1.19.6-10.99.1, …), 87 product×package rows across 28 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS, SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, … (28 product lines)): Fixed 71, Known Not Affected 14, First Fixed 2. | https://www.suse.com/security/cve/CVE-2026-34000/ |
ubuntu
|
medium | CVE-2026-34000 medium priority: Ubuntu including 7 source packages (xorg, xorg-hwe-16.04, …), 46 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 16, needs-triage 16, not-affected 12, released 2. | https://ubuntu.com/security/CVE-2026-34000 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| x.org | x_server | — | cpe:2.3:a:x.org:x_server:-:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 6.0 | cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 10.0 | cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* |