Multiple integer overflows in X.org libX11 1.5.99.901 (1.6 RC1) and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the (1) XQueryFont, (2) _XF86BigfontQueryFont, (3) XListFontsWithInfo, (4) XGetMotionEvents, (5) XListHosts, (6) XGetModifierMapping, (7) XGetPointerMapping, (8) XGetKeyboardMapping, (9) XGetWindowProperty, (10) XGetImage, (11) LoadColornameDB, (12) XrmGetFileDatabase, (13) _XimParseStringFile, or (14) TransFileName functions.
結論預警: CVE-2013-1981 綜合評估為中等風險（51.9/100）：CVSS 技術影響為中級，利用機率（EPSS 1.41%） 強制指令: 梳理受影響資產並納入修補計畫。
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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 | 0.89% | 1.41% | +0.51% |
| 2 | 2025-07-13 | 0.96% | 0.89% | -0.07% |
| 3 | 2025-03-30 | — | 0.96% | — |
完整 EPSS 歷史 （共 8 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 |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2013-1981 not yet assigned 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-2013-1981 |
gentoo
|
high | CVE-2013-1981: 1 GLSA(s) (201405-07), 1 atom(s) (x11-base/xorg-server); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-1981 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2013-1981 |
suse
|
medium | CVE-2013-1981 severity moderate: SUSE including 62 source package names (Mesa, libX11-6-1.6.2-11.1, …), 148 product×package rows across 44 product lines (SUSE Linux Enterprise Desktop 11 SP2, SUSE Linux Enterprise Desktop 11 SP3, … (44 product lines)): Fixed 145, Known Not Affected 3. | https://www.suse.com/security/cve/CVE-2013-1981/ |
ubuntu
|
medium | CVE-2013-1981 medium priority: Ubuntu including 1 source packages (libx11), 5 status rows across 5 suites (lucid, precise, quantal, raring, upstream): released 4, pending 1. | https://ubuntu.com/security/CVE-2013-1981 |
: Additional products added per http://www.ubuntu.com/usn/USN-1854-1/
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| x | libx11 | <= 1.5.99.901 | cpe:2.3:a:x:libx11:*:*:*:*:*:*:*:* |
| x | libx11 | 1.5.0 | cpe:2.3:a:x:libx11:1.5.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 10.04 | cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:* |
| canonical | ubuntu_linux | 12.10 | cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 13.04 | cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:* |