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.
结论预警: CVE-2011-0495 综合评估为中等风险（59/100）：CVSS 技术影响为中级，利用概率（EPSS 4.21%） 核心证据: 近一日 EPSS 上升 +3.63%，被利用关注度持续升高。 强制指令: 梳理受影响资产并纳入修补计划。
风险随态势动态变化；本站持续评估并同步更新本页展示内容。
EPSS 日更估计相对被利用可能性；百分位表示该 CVE 在已评分漏洞中的相对排名（越高表示相对更严重）。
| # | 日期 | 旧 EPSS 分数 | 新 EPSS 分数 | 变化（新 − 旧） |
|---|---|---|---|---|
| 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 历史 （共 13 条）
该 CVE 的 CVSS 指标。
| 底座分 | 版本 | 严重度 | 向量 | 可利用性 | 影响 | 分数来源 |
|---|---|---|---|---|---|---|
| 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), 3 status rows across 3 suites (bullseye, forky, sid): resolved 3. | 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 |
| 厂商 | 产品 | 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:*:*:*:*:*:*:* |