GHSA-7qjx-378m-p8hm · Severity: high — A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a...
A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a non-zero value of groups, this will cause a buffer overflow because the key actions are of the wrong size.
Conclusion & alert: CVE-2025-26597 is rated Moderate Risk (44.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.47%). Mandatory action: Review affected assets and schedule remediation.
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 | 2026-06-15 | 0.02% | 0.47% | +0.45% |
| 2 | 2026-04-05 | 0.05% | 0.02% | -0.03% |
| 3 | 2025-12-22 | — | 0.05% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
GHSA-7qjx-378m-p8hm · Severity: high — A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a...
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2025-26597: 2 source package rows (xorg-server, xwayland); 6 state rows across 3 repos (3.21-community, 3.22-community, edge-community); fixed 6, open 0. | https://security.alpinelinux.org/vuln/CVE-2025-26597 |
debian
|
not yet assigned | CVE-2025-26597 not yet assigned priority: Debian including 2 source packages (xorg-server, xwayland), 9 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 8, open 1. | https://security-tracker.debian.org/tracker/CVE-2025-26597 |
gentoo
|
high | CVE-2025-26597: 1 GLSA(s) (202506-04), 2 atom(s) (x11-base/xorg-server, x11-base/xwayland); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2025-26597 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-26597 |
suse
|
medium | CVE-2025-26597 severity moderate: SUSE including 405 source package names (0.3.2-1.2:libX11-6-1.8.7-150600.3.3.1, 0.3.2-1.2:libX11-data-1.8.7-150600.3.3.1, …), 1071 product×package rows across 215 product lines (Container bci/openjdk, Container bci/openjdk-devel, … (215 product lines)): Fixed 835, Known Affected 231, Known Not Affected 5. | https://www.suse.com/security/cve/CVE-2025-26597/ |
ubuntu
|
medium | CVE-2025-26597 medium priority: Ubuntu including 7 source packages (xorg, xorg-hwe-16.04, …), 58 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 25, released 17, not-affected 13, needs-triage 3. | https://ubuntu.com/security/CVE-2025-26597 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| tigervnc | tigervnc | — | cpe:2.3:a:tigervnc:tigervnc:-:*:*:*:*:*:*:* |
| x.org | x_server | < 21.1.16 | cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* |
| x.org | xwayland | < 24.1.6 | cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:* |
| 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:*:*:*:*:*:*:* |