Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.
結論預警: CVE-2011-5129 綜合評估為高可利用風險（62.8/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 7.70%，百分位 94%） 核心證據: 已收錄 4 筆公開利用參考（Exploit-DB）。 強制指令: 存在公開利用—請盤點暴露面、落實緩解措施並優先修補。
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。
| EDB-ID | 來源 | 類型 | 公開時間 | 連結 |
|---|---|---|---|---|
| 18159 | exploit_db | edb | 2011-11-25 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 31.14% | 7.70% | -23.44% |
| 2 | 2026-05-01 | 30.07% | 31.14% | +1.07% |
| 3 | 2025-10-07 | — | 30.07% | — |
完整 EPSS 歷史 （共 18 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 |
|---|---|---|---|
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2011-5129 |
ubuntu
|
medium | CVE-2011-5129 medium priority: Ubuntu including 2 source packages (xchat, xchat-gnome), 12 status rows across 6 suites (hardy, lucid, natty, oneiric, precise, upstream): not-affected 9, needs-triage 2, ignored 1. | https://ubuntu.com/security/CVE-2011-5129 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| xchat | xchat | <= 2.8.9 | cpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:* |
| xchat | xchat | 1.2.1 | cpe:2.3:a:xchat:xchat:1.2.1:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.9 | cpe:2.3:a:xchat:xchat:1.3.9:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.10 | cpe:2.3:a:xchat:xchat:1.3.10:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.11 | cpe:2.3:a:xchat:xchat:1.3.11:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.12 | cpe:2.3:a:xchat:xchat:1.3.12:*:*:*:*:*:*:* |
| xchat | xchat | 1.3.13 | cpe:2.3:a:xchat:xchat:1.3.13:*:*:*:*:*:*:* |
| xchat | xchat | 1.4 | cpe:2.3:a:xchat:xchat:1.4:*:*:*:*:*:*:* |
| xchat | xchat | 1.4.1 | cpe:2.3:a:xchat:xchat:1.4.1:*:*:*:*:*:*:* |
| xchat | xchat | 1.4.2 | cpe:2.3:a:xchat:xchat:1.4.2:*:*:*:*:*:*:* |
| xchat | xchat | 1.4.3 | cpe:2.3:a:xchat:xchat:1.4.3:*:*:*:*:*:*:* |
| xchat | xchat | 1.5.6 | cpe:2.3:a:xchat:xchat:1.5.6:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.0 | cpe:2.3:a:xchat:xchat:1.8.0:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.1 | cpe:2.3:a:xchat:xchat:1.8.1:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.2 | cpe:2.3:a:xchat:xchat:1.8.2:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.3 | cpe:2.3:a:xchat:xchat:1.8.3:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.4 | cpe:2.3:a:xchat:xchat:1.8.4:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.5 | cpe:2.3:a:xchat:xchat:1.8.5:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.6 | cpe:2.3:a:xchat:xchat:1.8.6:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.7 | cpe:2.3:a:xchat:xchat:1.8.7:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.8 | cpe:2.3:a:xchat:xchat:1.8.8:*:*:*:*:*:*:* |
| xchat | xchat | 1.8.9 | cpe:2.3:a:xchat:xchat:1.8.9:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.0 | cpe:2.3:a:xchat:xchat:1.9.0:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.1 | cpe:2.3:a:xchat:xchat:1.9.1:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.2 | cpe:2.3:a:xchat:xchat:1.9.2:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.3 | cpe:2.3:a:xchat:xchat:1.9.3:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.4 | cpe:2.3:a:xchat:xchat:1.9.4:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.5 | cpe:2.3:a:xchat:xchat:1.9.5:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.6 | cpe:2.3:a:xchat:xchat:1.9.6:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.7 | cpe:2.3:a:xchat:xchat:1.9.7:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.8 | cpe:2.3:a:xchat:xchat:1.9.8:*:*:*:*:*:*:* |
| xchat | xchat | 1.9.9 | cpe:2.3:a:xchat:xchat:1.9.9:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.0 | cpe:2.3:a:xchat:xchat:2.0.0:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.1 | cpe:2.3:a:xchat:xchat:2.0.1:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.2 | cpe:2.3:a:xchat:xchat:2.0.2:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.3 | cpe:2.3:a:xchat:xchat:2.0.3:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.4 | cpe:2.3:a:xchat:xchat:2.0.4:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.5 | cpe:2.3:a:xchat:xchat:2.0.5:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.6 | cpe:2.3:a:xchat:xchat:2.0.6:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.7 | cpe:2.3:a:xchat:xchat:2.0.7:*:*:*:*:*:*:* |
| xchat | xchat | 2.0.8 | cpe:2.3:a:xchat:xchat:2.0.8:*:*:*:*:*:*:* |
| xchat | xchat | 2.6.7 | cpe:2.3:a:xchat:xchat:2.6.7:*:*:*:*:*:*:* |
| xchat | xchat | 2.8.0 | cpe:2.3:a:xchat:xchat:2.8.0:*:*:*:*:*:*:* |
| xchat | xchat | 2.8.1 | cpe:2.3:a:xchat:xchat:2.8.1:*:*:*:*:*:*:* |
| xchat | xchat | 2.8.3 | cpe:2.3:a:xchat:xchat:2.8.3:*:*:*:*:*:*:* |
| xchat | xchat | 2.8.3 | cpe:2.3:a:xchat:xchat:2.8.3:c:*:*:*:*:*:* |
| xchat | xchat | 2.8.3 | cpe:2.3:a:xchat:xchat:2.8.3:e:*:*:*:*:*:* |
| xchat | xchat | 2.8.4 | cpe:2.3:a:xchat:xchat:2.8.4:*:*:*:*:*:*:* |
| xchat | xchat | 2.8.5 | cpe:2.3:a:xchat:xchat:2.8.5:b:*:*:*:*:*:* |
| xchat | xchat | 2.8.5 | cpe:2.3:a:xchat:xchat:2.8.5:e:*:*:*:*:*:* |
| xchat | xchat | 2.8.6 | cpe:2.3:a:xchat:xchat:2.8.6:*:*:*:*:*:*:* |
| xchat | xchat | 2.8.7 | cpe:2.3:a:xchat:xchat:2.8.7:a:*:*:*:*:*:* |
| xchat | xchat | 2.8.7 | cpe:2.3:a:xchat:xchat:2.8.7:b:*:*:*:*:*:* |
| xchat | xchat | 2.8.7 | cpe:2.3:a:xchat:xchat:2.8.7:c:*:*:*:*:*:* |
| xchat | xchat | 2.8.7 | cpe:2.3:a:xchat:xchat:2.8.7:d:*:*:*:*:*:* |
| xchat | xchat | 2.8.7 | cpe:2.3:a:xchat:xchat:2.8.7:e:*:*:*:*:*:* |
| xchat | xchat | 2.8.7 | cpe:2.3:a:xchat:xchat:2.8.7:f:*:*:*:*:*:* |
| xchat | xchat | 2.8.7b | cpe:2.3:a:xchat:xchat:2.8.7b:*:*:*:*:*:*:* |
| xchat | xchat | 2.8.8 | cpe:2.3:a:xchat:xchat:2.8.8:*:*:*:*:*:*:* |