The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.
结论预警: CVE-2011-2895 综合评估为高风险（71.5/100）：CVSS 技术影响为严重级，利用概率偏高（EPSS 8.36%，百分位 94%） 核心证据: EPSS 显示该漏洞近期被利用的可能性处于高位。 近一日 EPSS 上升 +1.34%，被利用关注度持续升高。 强制指令: 被利用概率偏高—请排查暴露面并优先安排修补。
风险随态势动态变化；本站持续评估并同步更新本页展示内容。
EPSS 日更估计相对被利用可能性；百分位表示该 CVE 在已评分漏洞中的相对排名（越高表示相对更严重）。
| # | 日期 | 旧 EPSS 分数 | 新 EPSS 分数 | 变化（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 7.02% | 8.36% | +1.34% |
| 2 | 2026-02-05 | 7.20% | 7.02% | -0.18% |
| 3 | 2026-01-23 | — | 7.20% | — |
完整 EPSS 历史 （共 18 条）
该 CVE 的 CVSS 指标。
| 底座分 | 版本 | 严重度 | 向量 | 可利用性 | 影响 | 分数来源 |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2011-2895 not yet assigned priority: Debian including 1 source packages (libxfont), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-2895 |
gentoo
|
high | CVE-2011-2895: 1 GLSA(s) (201402-23), 1 atom(s) (x11-libs/libXfont); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-2895 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2011-2895 |
ubuntu
|
medium | CVE-2011-2895 medium priority: Ubuntu including 1 source packages (libxfont), 5 status rows across 5 suites (hardy, lucid, maverick, natty, upstream): released 4, ignored 1. | https://ubuntu.com/security/CVE-2011-2895 |
| 厂商 | 产品 | 版本 | 原始 CPE |
|---|---|---|---|
| freetype | freetype | 2.1.9 | cpe:2.3:a:freetype:freetype:2.1.9:*:*:*:*:*:*:* |
| x | libxfont | <= 1.4.3 | cpe:2.3:a:x:libxfont:*:*:*:*:*:*:*:* |
| x | libxfont | 1.2.0 | cpe:2.3:a:x:libxfont:1.2.0:*:*:*:*:*:*:* |
| x | libxfont | 1.2.1 | cpe:2.3:a:x:libxfont:1.2.1:*:*:*:*:*:*:* |
| x | libxfont | 1.2.2 | cpe:2.3:a:x:libxfont:1.2.2:*:*:*:*:*:*:* |
| x | libxfont | 1.2.3 | cpe:2.3:a:x:libxfont:1.2.3:*:*:*:*:*:*:* |
| x | libxfont | 1.2.4 | cpe:2.3:a:x:libxfont:1.2.4:*:*:*:*:*:*:* |
| x | libxfont | 1.2.5 | cpe:2.3:a:x:libxfont:1.2.5:*:*:*:*:*:*:* |
| x | libxfont | 1.2.6 | cpe:2.3:a:x:libxfont:1.2.6:*:*:*:*:*:*:* |
| x | libxfont | 1.2.7 | cpe:2.3:a:x:libxfont:1.2.7:*:*:*:*:*:*:* |
| x | libxfont | 1.2.8 | cpe:2.3:a:x:libxfont:1.2.8:*:*:*:*:*:*:* |
| x | libxfont | 1.2.9 | cpe:2.3:a:x:libxfont:1.2.9:*:*:*:*:*:*:* |
| x | libxfont | 1.3.0 | cpe:2.3:a:x:libxfont:1.3.0:*:*:*:*:*:*:* |
| x | libxfont | 1.3.1 | cpe:2.3:a:x:libxfont:1.3.1:*:*:*:*:*:*:* |
| x | libxfont | 1.3.2 | cpe:2.3:a:x:libxfont:1.3.2:*:*:*:*:*:*:* |
| x | libxfont | 1.3.3 | cpe:2.3:a:x:libxfont:1.3.3:*:*:*:*:*:*:* |
| x | libxfont | 1.3.4 | cpe:2.3:a:x:libxfont:1.3.4:*:*:*:*:*:*:* |
| x | libxfont | 1.4.0 | cpe:2.3:a:x:libxfont:1.4.0:*:*:*:*:*:*:* |
| x | libxfont | 1.4.1 | cpe:2.3:a:x:libxfont:1.4.1:*:*:*:*:*:*:* |
| x | libxfont | 1.4.2 | cpe:2.3:a:x:libxfont:1.4.2:*:*:*:*:*:*:* |
| freebsd | freebsd | — | cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* |
| netbsd | netbsd | — | cpe:2.3:o:netbsd:netbsd:*:*:*:*:*:*:*:* |
| openbsd | openbsd | <= 3.7 | cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.0 | cpe:2.3:o:openbsd:openbsd:2.0:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.1 | cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.2 | cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.3 | cpe:2.3:o:openbsd:openbsd:2.3:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.4 | cpe:2.3:o:openbsd:openbsd:2.4:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.5 | cpe:2.3:o:openbsd:openbsd:2.5:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.6 | cpe:2.3:o:openbsd:openbsd:2.6:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.7 | cpe:2.3:o:openbsd:openbsd:2.7:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.8 | cpe:2.3:o:openbsd:openbsd:2.8:*:*:*:*:*:*:* |
| openbsd | openbsd | 2.9 | cpe:2.3:o:openbsd:openbsd:2.9:*:*:*:*:*:*:* |
| openbsd | openbsd | 3.0 | cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:* |
| openbsd | openbsd | 3.1 | cpe:2.3:o:openbsd:openbsd:3.1:*:*:*:*:*:*:* |
| openbsd | openbsd | 3.2 | cpe:2.3:o:openbsd:openbsd:3.2:*:*:*:*:*:*:* |
| openbsd | openbsd | 3.3 | cpe:2.3:o:openbsd:openbsd:3.3:*:*:*:*:*:*:* |
| openbsd | openbsd | 3.4 | cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:* |
| openbsd | openbsd | 3.5 | cpe:2.3:o:openbsd:openbsd:3.5:*:*:*:*:*:*:* |
| openbsd | openbsd | 3.6 | cpe:2.3:o:openbsd:openbsd:3.6:*:*:*:*:*:*:* |