Off-by-one error in t1lib 5.1.2 and earlier, as used in Xpdf before 3.02pl6, teTeX, and other products, allows remote attackers to cause a denial of service (application crash) via a PDF document containing a crafted Type 1 font that triggers an invalid memory read, integer overflow, and invalid pointer dereference, a different vulnerability than CVE-2011-0764.
結論預警: CVE-2011-1554 綜合評估為中等風險（50.4/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 5.42%，百分位 92%） 核心證據: EPSS 顯示該漏洞近期被利用的可能性處於高位。 近一日 EPSS 上升 +1.16%，被利用關注度持續升高。 強制指令: 被利用機率偏高—請盤點暴露面並優先安排修補。
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 | 4.26% | 5.42% | +1.16% |
| 2 | 2026-06-07 | 6.58% | 4.26% | -2.32% |
| 3 | 2025-03-30 | — | 6.58% | — |
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 |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2011-1554 unimportant priority: Debian including 2 source packages (poppler, xpdf), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. | https://security-tracker.debian.org/tracker/CVE-2011-1554 |
gentoo
|
normal | CVE-2011-1554: 1 GLSA(s) (201701-57), 1 atom(s) (media-libs/t1lib); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-1554 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2011-1554 |
ubuntu
|
low | CVE-2011-1554 low priority: Ubuntu including 1 source packages (t1lib), 8 status rows across 8 suites (dapper, hardy, karmic, lucid, maverick, natty, oneiric, upstream): released 4, ignored 3, needs-triage 1. | https://ubuntu.com/security/CVE-2011-1554 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| t1lib | t1lib | <= 5.1.2 | cpe:2.3:a:t1lib:t1lib:*:*:*:*:*:*:*:* |
| t1lib | t1lib | 0.1 | cpe:2.3:a:t1lib:t1lib:0.1:alpha:*:*:*:*:*:* |
| t1lib | t1lib | 0.2 | cpe:2.3:a:t1lib:t1lib:0.2:beta:*:*:*:*:*:* |
| t1lib | t1lib | 0.3 | cpe:2.3:a:t1lib:t1lib:0.3:beta:*:*:*:*:*:* |
| t1lib | t1lib | 0.4 | cpe:2.3:a:t1lib:t1lib:0.4:beta:*:*:*:*:*:* |
| t1lib | t1lib | 0.5 | cpe:2.3:a:t1lib:t1lib:0.5:beta:*:*:*:*:*:* |
| t1lib | t1lib | 0.6 | cpe:2.3:a:t1lib:t1lib:0.6:beta:*:*:*:*:*:* |
| t1lib | t1lib | 0.7 | cpe:2.3:a:t1lib:t1lib:0.7:beta:*:*:*:*:*:* |
| t1lib | t1lib | 0.8 | cpe:2.3:a:t1lib:t1lib:0.8:beta:*:*:*:*:*:* |
| t1lib | t1lib | 0.9 | cpe:2.3:a:t1lib:t1lib:0.9:*:*:*:*:*:*:* |
| t1lib | t1lib | 0.9.1 | cpe:2.3:a:t1lib:t1lib:0.9.1:*:*:*:*:*:*:* |
| t1lib | t1lib | 0.9.2 | cpe:2.3:a:t1lib:t1lib:0.9.2:*:*:*:*:*:*:* |
| t1lib | t1lib | 1.0 | cpe:2.3:a:t1lib:t1lib:1.0:*:*:*:*:*:*:* |
| t1lib | t1lib | 1.0.1 | cpe:2.3:a:t1lib:t1lib:1.0.1:*:*:*:*:*:*:* |
| t1lib | t1lib | 1.1.0 | cpe:2.3:a:t1lib:t1lib:1.1.0:*:*:*:*:*:*:* |
| t1lib | t1lib | 1.1.1 | cpe:2.3:a:t1lib:t1lib:1.1.1:*:*:*:*:*:*:* |
| t1lib | t1lib | 1.2 | cpe:2.3:a:t1lib:t1lib:1.2:*:*:*:*:*:*:* |
| t1lib | t1lib | 1.3 | cpe:2.3:a:t1lib:t1lib:1.3:*:*:*:*:*:*:* |
| t1lib | t1lib | 1.3.1 | cpe:2.3:a:t1lib:t1lib:1.3.1:*:*:*:*:*:*:* |
| t1lib | t1lib | 5.0.0 | cpe:2.3:a:t1lib:t1lib:5.0.0:*:*:*:*:*:*:* |
| t1lib | t1lib | 5.0.1 | cpe:2.3:a:t1lib:t1lib:5.0.1:*:*:*:*:*:*:* |
| t1lib | t1lib | 5.0.2 | cpe:2.3:a:t1lib:t1lib:5.0.2:*:*:*:*:*:*:* |
| t1lib | t1lib | 5.1.0 | cpe:2.3:a:t1lib:t1lib:5.1.0:*:*:*:*:*:*:* |
| t1lib | t1lib | 5.1.1 | cpe:2.3:a:t1lib:t1lib:5.1.1:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.5a | cpe:2.3:a:foolabs:xpdf:0.5a:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.7a | cpe:2.3:a:foolabs:xpdf:0.7a:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.91a | cpe:2.3:a:foolabs:xpdf:0.91a:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.91b | cpe:2.3:a:foolabs:xpdf:0.91b:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.91c | cpe:2.3:a:foolabs:xpdf:0.91c:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.92a | cpe:2.3:a:foolabs:xpdf:0.92a:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.92b | cpe:2.3:a:foolabs:xpdf:0.92b:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.92c | cpe:2.3:a:foolabs:xpdf:0.92c:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.92d | cpe:2.3:a:foolabs:xpdf:0.92d:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.92e | cpe:2.3:a:foolabs:xpdf:0.92e:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.93a | cpe:2.3:a:foolabs:xpdf:0.93a:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.93b | cpe:2.3:a:foolabs:xpdf:0.93b:*:*:*:*:*:*:* |
| foolabs | xpdf | 0.93c | cpe:2.3:a:foolabs:xpdf:0.93c:*:*:*:*:*:*:* |
| foolabs | xpdf | 1.00a | cpe:2.3:a:foolabs:xpdf:1.00a:*:*:*:*:*:*:* |
| foolabs | xpdf | 3.0.1 | cpe:2.3:a:foolabs:xpdf:3.0.1:*:*:*:*:*:*:* |
| foolabs | xpdf | 3.02pl1 | cpe:2.3:a:foolabs:xpdf:3.02pl1:*:*:*:*:*:*:* |
| foolabs | xpdf | 3.02pl2 | cpe:2.3:a:foolabs:xpdf:3.02pl2:*:*:*:*:*:*:* |
| foolabs | xpdf | 3.02pl3 | cpe:2.3:a:foolabs:xpdf:3.02pl3:*:*:*:*:*:*:* |
| foolabs | xpdf | 3.02pl4 | cpe:2.3:a:foolabs:xpdf:3.02pl4:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | <= 3.02 | cpe:2.3:a:glyphandcog:xpdfreader:*:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.2 | cpe:2.3:a:glyphandcog:xpdfreader:0.2:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.3 | cpe:2.3:a:glyphandcog:xpdfreader:0.3:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.4 | cpe:2.3:a:glyphandcog:xpdfreader:0.4:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.5 | cpe:2.3:a:glyphandcog:xpdfreader:0.5:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.6 | cpe:2.3:a:glyphandcog:xpdfreader:0.6:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.7 | cpe:2.3:a:glyphandcog:xpdfreader:0.7:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.80 | cpe:2.3:a:glyphandcog:xpdfreader:0.80:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.90 | cpe:2.3:a:glyphandcog:xpdfreader:0.90:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.91 | cpe:2.3:a:glyphandcog:xpdfreader:0.91:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.92 | cpe:2.3:a:glyphandcog:xpdfreader:0.92:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 0.93 | cpe:2.3:a:glyphandcog:xpdfreader:0.93:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 1.00 | cpe:2.3:a:glyphandcog:xpdfreader:1.00:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 1.01 | cpe:2.3:a:glyphandcog:xpdfreader:1.01:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 2.00 | cpe:2.3:a:glyphandcog:xpdfreader:2.00:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 2.01 | cpe:2.3:a:glyphandcog:xpdfreader:2.01:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 2.02 | cpe:2.3:a:glyphandcog:xpdfreader:2.02:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 2.03 | cpe:2.3:a:glyphandcog:xpdfreader:2.03:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 3.00 | cpe:2.3:a:glyphandcog:xpdfreader:3.00:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 3.01 | cpe:2.3:a:glyphandcog:xpdfreader:3.01:*:*:*:*:*:*:* |
| glyphandcog | xpdfreader | 3.02 | cpe:2.3:a:glyphandcog:xpdfreader:3.02:*:*:*:*:*:*:* |