Heap-based buffer overflow in the ecommunity_ecom2str function in bgp_ecommunity.c in bgpd in Quagga before 0.99.19 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by sending a crafted BGP UPDATE message over IPv4.
結論預警: CVE-2011-3327 綜合評估為中等風險（57.8/100）：CVSS 技術影響為高級，利用機率偏高（EPSS 7.61%，百分位 94%） 核心證據: EPSS 顯示該漏洞近期被利用的可能性處於高位。 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 | 21.92% | 7.61% | -14.30% |
| 2 | 2026-06-13 | 20.40% | 21.92% | +1.52% |
| 3 | 2026-04-11 | — | 20.40% | — |
完整 EPSS 歷史 （共 14 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 |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
high | CVE-2011-3327: 1 GLSA(s) (201202-02), 1 atom(s) (net-misc/quagga); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-3327 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2011-3327 |
ubuntu
|
medium | CVE-2011-3327 medium priority: Ubuntu including 1 source packages (quagga), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 5, ignored 1. | https://ubuntu.com/security/CVE-2011-3327 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| quagga | quagga | <= 0.99.18 | cpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:* |
| quagga | quagga | 0.95 | cpe:2.3:a:quagga:quagga:0.95:*:*:*:*:*:*:* |
| quagga | quagga | 0.96 | cpe:2.3:a:quagga:quagga:0.96:*:*:*:*:*:*:* |
| quagga | quagga | 0.96.1 | cpe:2.3:a:quagga:quagga:0.96.1:*:*:*:*:*:*:* |
| quagga | quagga | 0.96.2 | cpe:2.3:a:quagga:quagga:0.96.2:*:*:*:*:*:*:* |
| quagga | quagga | 0.96.3 | cpe:2.3:a:quagga:quagga:0.96.3:*:*:*:*:*:*:* |
| quagga | quagga | 0.96.4 | cpe:2.3:a:quagga:quagga:0.96.4:*:*:*:*:*:*:* |
| quagga | quagga | 0.96.5 | cpe:2.3:a:quagga:quagga:0.96.5:*:*:*:*:*:*:* |
| quagga | quagga | 0.97.0 | cpe:2.3:a:quagga:quagga:0.97.0:*:*:*:*:*:*:* |
| quagga | quagga | 0.97.1 | cpe:2.3:a:quagga:quagga:0.97.1:*:*:*:*:*:*:* |
| quagga | quagga | 0.97.2 | cpe:2.3:a:quagga:quagga:0.97.2:*:*:*:*:*:*:* |
| quagga | quagga | 0.97.3 | cpe:2.3:a:quagga:quagga:0.97.3:*:*:*:*:*:*:* |
| quagga | quagga | 0.97.4 | cpe:2.3:a:quagga:quagga:0.97.4:*:*:*:*:*:*:* |
| quagga | quagga | 0.97.5 | cpe:2.3:a:quagga:quagga:0.97.5:*:*:*:*:*:*:* |
| quagga | quagga | 0.98.0 | cpe:2.3:a:quagga:quagga:0.98.0:*:*:*:*:*:*:* |
| quagga | quagga | 0.98.1 | cpe:2.3:a:quagga:quagga:0.98.1:*:*:*:*:*:*:* |
| quagga | quagga | 0.98.2 | cpe:2.3:a:quagga:quagga:0.98.2:*:*:*:*:*:*:* |
| quagga | quagga | 0.98.3 | cpe:2.3:a:quagga:quagga:0.98.3:*:*:*:*:*:*:* |
| quagga | quagga | 0.98.4 | cpe:2.3:a:quagga:quagga:0.98.4:*:*:*:*:*:*:* |
| quagga | quagga | 0.98.5 | cpe:2.3:a:quagga:quagga:0.98.5:*:*:*:*:*:*:* |
| quagga | quagga | 0.98.6 | cpe:2.3:a:quagga:quagga:0.98.6:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.1 | cpe:2.3:a:quagga:quagga:0.99.1:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.2 | cpe:2.3:a:quagga:quagga:0.99.2:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.3 | cpe:2.3:a:quagga:quagga:0.99.3:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.4 | cpe:2.3:a:quagga:quagga:0.99.4:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.5 | cpe:2.3:a:quagga:quagga:0.99.5:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.6 | cpe:2.3:a:quagga:quagga:0.99.6:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.7 | cpe:2.3:a:quagga:quagga:0.99.7:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.8 | cpe:2.3:a:quagga:quagga:0.99.8:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.9 | cpe:2.3:a:quagga:quagga:0.99.9:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.10 | cpe:2.3:a:quagga:quagga:0.99.10:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.11 | cpe:2.3:a:quagga:quagga:0.99.11:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.12 | cpe:2.3:a:quagga:quagga:0.99.12:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.13 | cpe:2.3:a:quagga:quagga:0.99.13:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.14 | cpe:2.3:a:quagga:quagga:0.99.14:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.15 | cpe:2.3:a:quagga:quagga:0.99.15:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.16 | cpe:2.3:a:quagga:quagga:0.99.16:*:*:*:*:*:*:* |
| quagga | quagga | 0.99.17 | cpe:2.3:a:quagga:quagga:0.99.17:*:*:*:*:*:*:* |