OpenSSL before 0.9.8l, and 0.9.8m through 1.x, does not properly restrict client-initiated renegotiation within the SSL and TLS protocols, which might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection, a different vulnerability than CVE-2011-5094. NOTE: it can also be argued that it is the responsibility of server deployments, not a security library, to prevent or limit renegotiation when it is inappropriate within a specific environment
結論預警: CVE-2011-1473 綜合評估為中等風險（53.4/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 66.42%，百分位 99%） 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 | 2026-07-12 | 67.70% | 66.42% | -1.28% |
| 2 | 2026-06-15 | 55.49% | 67.70% | +12.22% |
| 3 | 2026-05-18 | — | 55.49% | — |
完整 EPSS 歷史 （共 66 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
|
low | — | https://access.redhat.com/security/cve/CVE-2011-1473 |
ubuntu
|
low | CVE-2011-1473 low priority: Ubuntu including 2 source packages (openssl, openssl098), 16 status rows across 8 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, upstream): ignored 10, DNE 4, needs-triage 2. | https://ubuntu.com/security/CVE-2011-1473 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| openssl | openssl | 0.9.8m | cpe:2.3:a:openssl:openssl:0.9.8m:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8m | cpe:2.3:a:openssl:openssl:0.9.8m:beta1:*:*:*:*:*:* |
| openssl | openssl | 0.9.8n | cpe:2.3:a:openssl:openssl:0.9.8n:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8o | cpe:2.3:a:openssl:openssl:0.9.8o:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8p | cpe:2.3:a:openssl:openssl:0.9.8p:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8r | cpe:2.3:a:openssl:openssl:0.9.8r:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8s | cpe:2.3:a:openssl:openssl:0.9.8s:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8t | cpe:2.3:a:openssl:openssl:0.9.8t:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8u | cpe:2.3:a:openssl:openssl:0.9.8u:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8v | cpe:2.3:a:openssl:openssl:0.9.8v:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8w | cpe:2.3:a:openssl:openssl:0.9.8w:*:*:*:*:*:*:* |
| openssl | openssl | 0.9.8x | cpe:2.3:a:openssl:openssl:0.9.8x:*:*:*:*:*:*:* |
| openssl | openssl | <= 0.9.8k | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |