Stack-based buffer overflow in the ast_uri_encode function in main/utils.c in Asterisk Open Source before 1.4.38.1, 1.4.39.1, 1.6.1.21, 1.6.2.15.1, 1.6.2.16.1, 1.8.1.2, 1.8.2.; and Business Edition before C.3.6.2; when running in pedantic mode allows remote authenticated users to execute arbitrary code via crafted caller ID data in vectors involving the (1) SIP channel driver, (2) URIENCODE dialplan function, or (3) AGI dialplan function.
結論預警: CVE-2011-0495 綜合評估為中等風險（59/100）：CVSS 技術影響為中級，利用機率（EPSS 4.21%） 核心證據: 近一日 EPSS 上升 +3.63%，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 | 0.57% | 4.21% | +3.63% |
| 2 | 2025-07-22 | 0.47% | 0.57% | +0.10% |
| 3 | 2025-03-30 | — | 0.47% | — |
完整 EPSS 歷史 （共 13 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 |
|---|---|---|---|---|---|---|
| 6.0 | 2.0 | MEDIUM |
|
6.8 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2011-0495 not yet assigned priority: Debian including 1 source packages (asterisk), 2 status rows across 2 suites (bullseye, sid): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2011-0495 |
ubuntu
|
medium | CVE-2011-0495 medium priority: Ubuntu including 1 source packages (asterisk), 7 status rows across 7 suites (dapper, hardy, karmic, lucid, maverick, natty, upstream): released 4, ignored 3. | https://ubuntu.com/security/CVE-2011-0495 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| digium | asterisk | < c.3.6.2 | cpe:2.3:a:digium:asterisk:*:*:*:*:business:*:*:* |
| digium | asterisk | >= 1.2.0, <= 1.2.40 | cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* |
| digium | asterisk | >= 1.4.0, < 1.4.38.1 | cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* |
| digium | asterisk | >= 1.4.39, < 1.4.39.1 | cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* |
| digium | asterisk | >= 1.6.1, < 1.6.1.21 | cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* |
| digium | asterisk | >= 1.6.2, < 1.6.2.15.1 | cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* |
| digium | asterisk | >= 1.6.2.16, < 1.6.2.16.1 | cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* |
| digium | asterisk | >= 1.8.0, < 1.8.1.2 | cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* |
| digium | asterisk | >= 1.8.2, < 1.8.2.2 | cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* |
| digium | asterisknow | 1.5 | cpe:2.3:a:digium:asterisknow:1.5:*:*:*:*:*:*:* |
| fedoraproject | fedora | 13 | cpe:2.3:o:fedoraproject:fedora:13:*:*:*:*:*:*:* |
| fedoraproject | fedora | 14 | cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:* |
| debian | debian_linux | 6.0 | cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* |
| digium | s800i_firmware | 1.2.0 | cpe:2.3:o:digium:s800i_firmware:1.2.0:*:*:*:*:*:*:* |