An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading to DoS or remote code execution.
総合評価: CVE-2018-14600 は高リスク（71.1/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 9.71%、95 パーセンタイル） 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 11.01% | 9.71% | -1.29% |
| 2 | 2026-04-12 | 7.25% | 11.01% | +3.75% |
| 3 | 2026-03-10 | — | 7.25% | — |
EPSS の全履歴 （全 29 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 9.8 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
critical | CVE-2018-14600: 1 source package rows (libx11); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. | https://security.alpinelinux.org/vuln/CVE-2018-14600 |
debian
|
low | CVE-2018-14600 low priority: Debian including 1 source packages (libx11), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2018-14600 |
gentoo
|
normal | CVE-2018-14600: 1 GLSA(s) (201811-01), 1 atom(s) (x11-libs/libX11); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-14600 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-14600 |
suse
|
high | CVE-2018-14600 severity important: SUSE including 398 source package names (0.38.1:libX11-6-1.6.5-3.3.1, 0.38.1:libX11-data-1.6.5-3.3.1, …), 1136 product×package rows across 204 product lines (Container bci/openjdk, Container bci/openjdk-devel, … (204 product lines)): Fixed 905, Known Affected 231. | https://www.suse.com/security/cve/CVE-2018-14600/ |
ubuntu
|
medium | CVE-2018-14600 medium priority: Ubuntu including 1 source packages (libx11), 4 status rows across 4 suites (bionic, trusty, upstream, xenial): released 4. | https://ubuntu.com/security/CVE-2018-14600 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| x.org | libx11 | <= 1.6.5 | cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.openwall.com/lists/oss-security/2018/08/21/6 | Mailing List Third Party Advisory |
| http://www.securityfocus.com/bid/105177 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1041543 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2019:2079 | |
| https://bugzilla.suse.com/show_bug.cgi?id=1102068 | Issue Tracking Patch Third Party Advisory |
| https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11b46f3994bfc27fea | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html | Mailing List Third Party Advisory |
| https://lists.x.org/archives/xorg-announce/2018-August/002916.html | Third Party Advisory |
| https://security.gentoo.org/glsa/201811-01 | Third Party Advisory |
| https://usn.ubuntu.com/3758-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3758-2/ | Third Party Advisory |