Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.
結論預警: CVE-2011-0490 綜合評估為中等風險（50.1/100）：CVSS 技術影響為中級，利用機率（EPSS 2.52%） 核心證據: 近一日 EPSS 上升 +1.14%，被利用關注度持續升高。 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 | 1.38% | 2.52% | +1.14% |
| 2 | 2025-03-30 | 1.80% | 1.38% | -0.42% |
| 3 | 2025-03-29 | — | 1.80% | — |
完整 EPSS 歷史 （共 7 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 |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2011-0490 not yet assigned priority: Debian including 1 source packages (tor), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-0490 |
gentoo
|
high | CVE-2011-0490: 1 GLSA(s) (201110-13), 1 atom(s) (net-misc/tor); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-0490 |
ubuntu
|
medium | CVE-2011-0490 medium priority: Ubuntu including 1 source packages (tor), 8 status rows across 8 suites (dapper, hardy, karmic, lucid, maverick, natty, oneiric, upstream): DNE 3, ignored 2, not-affected 2, released 1. | https://ubuntu.com/security/CVE-2011-0490 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| tor | tor | <= 0.2.1.28 | cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:* |
| tor | tor | 0.0.2 | cpe:2.3:a:tor:tor:0.0.2:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre13 | cpe:2.3:a:tor:tor:0.0.2_pre13:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre14 | cpe:2.3:a:tor:tor:0.0.2_pre14:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre15 | cpe:2.3:a:tor:tor:0.0.2_pre15:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre16 | cpe:2.3:a:tor:tor:0.0.2_pre16:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre17 | cpe:2.3:a:tor:tor:0.0.2_pre17:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre18 | cpe:2.3:a:tor:tor:0.0.2_pre18:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre19 | cpe:2.3:a:tor:tor:0.0.2_pre19:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre20 | cpe:2.3:a:tor:tor:0.0.2_pre20:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre21 | cpe:2.3:a:tor:tor:0.0.2_pre21:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre22 | cpe:2.3:a:tor:tor:0.0.2_pre22:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre23 | cpe:2.3:a:tor:tor:0.0.2_pre23:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre24 | cpe:2.3:a:tor:tor:0.0.2_pre24:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre25 | cpe:2.3:a:tor:tor:0.0.2_pre25:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre26 | cpe:2.3:a:tor:tor:0.0.2_pre26:*:*:*:*:*:*:* |
| tor | tor | 0.0.2_pre27 | cpe:2.3:a:tor:tor:0.0.2_pre27:*:*:*:*:*:*:* |
| tor | tor | 0.0.3 | cpe:2.3:a:tor:tor:0.0.3:*:*:*:*:*:*:* |
| tor | tor | 0.0.4 | cpe:2.3:a:tor:tor:0.0.4:*:*:*:*:*:*:* |
| tor | tor | 0.0.5 | cpe:2.3:a:tor:tor:0.0.5:*:*:*:*:*:*:* |
| tor | tor | 0.0.6 | cpe:2.3:a:tor:tor:0.0.6:*:*:*:*:*:*:* |
| tor | tor | 0.0.6.1 | cpe:2.3:a:tor:tor:0.0.6.1:*:*:*:*:*:*:* |
| tor | tor | 0.0.6.2 | cpe:2.3:a:tor:tor:0.0.6.2:*:*:*:*:*:*:* |
| tor | tor | 0.0.7 | cpe:2.3:a:tor:tor:0.0.7:*:*:*:*:*:*:* |
| tor | tor | 0.0.7.1 | cpe:2.3:a:tor:tor:0.0.7.1:*:*:*:*:*:*:* |
| tor | tor | 0.0.7.2 | cpe:2.3:a:tor:tor:0.0.7.2:*:*:*:*:*:*:* |
| tor | tor | 0.0.7.3 | cpe:2.3:a:tor:tor:0.0.7.3:*:*:*:*:*:*:* |
| tor | tor | 0.0.8 | cpe:2.3:a:tor:tor:0.0.8:*:*:*:*:*:*:* |
| tor | tor | 0.0.8.1 | cpe:2.3:a:tor:tor:0.0.8.1:*:*:*:*:*:*:* |
| tor | tor | 0.0.9 | cpe:2.3:a:tor:tor:0.0.9:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.1 | cpe:2.3:a:tor:tor:0.0.9.1:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.2 | cpe:2.3:a:tor:tor:0.0.9.2:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.3 | cpe:2.3:a:tor:tor:0.0.9.3:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.4 | cpe:2.3:a:tor:tor:0.0.9.4:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.5 | cpe:2.3:a:tor:tor:0.0.9.5:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.6 | cpe:2.3:a:tor:tor:0.0.9.6:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.7 | cpe:2.3:a:tor:tor:0.0.9.7:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.8 | cpe:2.3:a:tor:tor:0.0.9.8:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.9 | cpe:2.3:a:tor:tor:0.0.9.9:*:*:*:*:*:*:* |
| tor | tor | 0.0.9.10 | cpe:2.3:a:tor:tor:0.0.9.10:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.1 | cpe:2.3:a:tor:tor:0.1.0.1:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.2 | cpe:2.3:a:tor:tor:0.1.0.2:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.3 | cpe:2.3:a:tor:tor:0.1.0.3:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.4 | cpe:2.3:a:tor:tor:0.1.0.4:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.5 | cpe:2.3:a:tor:tor:0.1.0.5:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.6 | cpe:2.3:a:tor:tor:0.1.0.6:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.7 | cpe:2.3:a:tor:tor:0.1.0.7:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.8 | cpe:2.3:a:tor:tor:0.1.0.8:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.9 | cpe:2.3:a:tor:tor:0.1.0.9:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.10 | cpe:2.3:a:tor:tor:0.1.0.10:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.11 | cpe:2.3:a:tor:tor:0.1.0.11:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.12 | cpe:2.3:a:tor:tor:0.1.0.12:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.13 | cpe:2.3:a:tor:tor:0.1.0.13:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.14 | cpe:2.3:a:tor:tor:0.1.0.14:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.15 | cpe:2.3:a:tor:tor:0.1.0.15:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.16 | cpe:2.3:a:tor:tor:0.1.0.16:*:*:*:*:*:*:* |
| tor | tor | 0.1.0.17 | cpe:2.3:a:tor:tor:0.1.0.17:*:*:*:*:*:*:* |
| tor | tor | 0.1.1 | cpe:2.3:a:tor:tor:0.1.1:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.1 | cpe:2.3:a:tor:tor:0.1.1.1:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.1 | cpe:2.3:a:tor:tor:0.1.1.1:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.2 | cpe:2.3:a:tor:tor:0.1.1.2:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.2 | cpe:2.3:a:tor:tor:0.1.1.2:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.3 | cpe:2.3:a:tor:tor:0.1.1.3:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.3 | cpe:2.3:a:tor:tor:0.1.1.3:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.4 | cpe:2.3:a:tor:tor:0.1.1.4:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.4 | cpe:2.3:a:tor:tor:0.1.1.4:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.5 | cpe:2.3:a:tor:tor:0.1.1.5:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.5 | cpe:2.3:a:tor:tor:0.1.1.5:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.6 | cpe:2.3:a:tor:tor:0.1.1.6:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.6 | cpe:2.3:a:tor:tor:0.1.1.6:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.7 | cpe:2.3:a:tor:tor:0.1.1.7:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.7 | cpe:2.3:a:tor:tor:0.1.1.7:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.8 | cpe:2.3:a:tor:tor:0.1.1.8:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.8 | cpe:2.3:a:tor:tor:0.1.1.8:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.9 | cpe:2.3:a:tor:tor:0.1.1.9:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.9 | cpe:2.3:a:tor:tor:0.1.1.9:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.10 | cpe:2.3:a:tor:tor:0.1.1.10:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.10 | cpe:2.3:a:tor:tor:0.1.1.10:alpha:*:*:*:*:*:* |
| tor | tor | 0.1.1.11 | cpe:2.3:a:tor:tor:0.1.1.11:*:*:*:*:*:*:* |
| tor | tor | 0.1.1.12 | cpe:2.3:a:tor:tor:0.1.1.12:*:*:*:*:*:*:* |