A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.
結論預警: CVE-2025-26596 綜合評估為中等風險（42.3/100）：CVSS 技術影響為高級，利用機率偏低（EPSS 0.39%） 強制指令: 梳理受影響資產並納入修補計畫。
風險隨態勢動態變化；本站持續評估並同步更新本頁展示內容。
EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化（新 − 舊） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.02% | 0.39% | +0.37% |
| 2 | 2026-04-05 | 0.05% | 0.02% | -0.03% |
| 3 | 2025-12-22 | — | 0.05% | — |
完整 EPSS 歷史 （共 6 筆）
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-26596 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-2025-26596 |
gentoo
|
high | CVE-2025-26596: 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-2025-26596 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-26596 |
suse
|
medium | CVE-2025-26596 severity moderate: SUSE including 310 source package names (21:xorg-x11-server-21.1.11-150600.5.6.1, 21:xorg-x11-server-Xvfb-21.1.11-150600.5.6.1, …), 394 product×package rows across 58 product lines (Container suse/kiosk/xorg, Image SLES15-SP3-SAPCAL-Azure, … (58 product lines)): Known Affected 231, Fixed 162, Known Not Affected 1. | https://www.suse.com/security/cve/CVE-2025-26596/ |
ubuntu
|
medium | CVE-2025-26596 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-2025-26596 |
| 廠商 | 產品 | 版本 | 原始 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:*:*:*:*:*:*:* |