Unbound before 1.4.13p2 attempts to free unallocated memory during processing of duplicate CNAME records in a signed zone, which allows remote DNS servers to cause a denial of service (daemon crash) via a crafted response.
结论预警: CVE-2011-4528 综合评估为中等风险（50.8/100）：CVSS 技术影响为中级，利用概率（EPSS 2.91%） 核心证据: 近一日 EPSS 上升 +1.01%，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 | 2025-11-18 | 1.90% | 2.91% | +1.01% |
| 2 | 2025-03-30 | 2.78% | 1.90% | -0.88% |
| 3 | 2025-03-29 | — | 2.78% | — |
完整 EPSS 历史 （共 8 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 |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
medium | CVE-2011-4528 medium priority: Debian including 1 source packages (unbound), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-4528 |
gentoo
|
normal | CVE-2011-4528: 1 GLSA(s) (201311-18), 1 atom(s) (net-dns/unbound); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-4528 |
ubuntu
|
medium | CVE-2011-4528 medium priority: Ubuntu including 1 source packages (unbound), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 4, DNE 1, not-affected 1. | https://ubuntu.com/security/CVE-2011-4528 |
: Per: http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txt "1.4.14 is released with the patch, but 1.4.14rc1 is vulnerable. http://www.unbound.net/downloads/unbound-1.4.14.tar.gz"
| 厂商 | 产品 | 版本 | 原始 CPE |
|---|---|---|---|
| unbound | unbound | <= 1.4.13 | cpe:2.3:a:unbound:unbound:*:*:*:*:*:*:*:* |
| unbound | unbound | 0.0 | cpe:2.3:a:unbound:unbound:0.0:*:*:*:*:*:*:* |
| unbound | unbound | 0.1 | cpe:2.3:a:unbound:unbound:0.1:*:*:*:*:*:*:* |
| unbound | unbound | 0.2 | cpe:2.3:a:unbound:unbound:0.2:*:*:*:*:*:*:* |
| unbound | unbound | 0.3 | cpe:2.3:a:unbound:unbound:0.3:*:*:*:*:*:*:* |
| unbound | unbound | 0.4 | cpe:2.3:a:unbound:unbound:0.4:*:*:*:*:*:*:* |
| unbound | unbound | 0.5 | cpe:2.3:a:unbound:unbound:0.5:*:*:*:*:*:*:* |
| unbound | unbound | 0.6 | cpe:2.3:a:unbound:unbound:0.6:*:*:*:*:*:*:* |
| unbound | unbound | 0.7 | cpe:2.3:a:unbound:unbound:0.7:*:*:*:*:*:*:* |
| unbound | unbound | 0.7.1 | cpe:2.3:a:unbound:unbound:0.7.1:*:*:*:*:*:*:* |
| unbound | unbound | 0.7.2 | cpe:2.3:a:unbound:unbound:0.7.2:*:*:*:*:*:*:* |
| unbound | unbound | 0.8 | cpe:2.3:a:unbound:unbound:0.8:*:*:*:*:*:*:* |
| unbound | unbound | 0.09 | cpe:2.3:a:unbound:unbound:0.09:*:*:*:*:*:*:* |
| unbound | unbound | 0.10 | cpe:2.3:a:unbound:unbound:0.10:*:*:*:*:*:*:* |
| unbound | unbound | 0.11 | cpe:2.3:a:unbound:unbound:0.11:*:*:*:*:*:*:* |
| unbound | unbound | 1.0.0 | cpe:2.3:a:unbound:unbound:1.0.0:*:*:*:*:*:*:* |
| unbound | unbound | 1.0.1 | cpe:2.3:a:unbound:unbound:1.0.1:*:*:*:*:*:*:* |
| unbound | unbound | 1.0.2 | cpe:2.3:a:unbound:unbound:1.0.2:*:*:*:*:*:*:* |
| unbound | unbound | 1.1.0 | cpe:2.3:a:unbound:unbound:1.1.0:*:*:*:*:*:*:* |
| unbound | unbound | 1.1.1 | cpe:2.3:a:unbound:unbound:1.1.1:*:*:*:*:*:*:* |
| unbound | unbound | 1.2.0 | cpe:2.3:a:unbound:unbound:1.2.0:*:*:*:*:*:*:* |
| unbound | unbound | 1.2.1 | cpe:2.3:a:unbound:unbound:1.2.1:*:*:*:*:*:*:* |
| unbound | unbound | 1.3.0 | cpe:2.3:a:unbound:unbound:1.3.0:*:*:*:*:*:*:* |
| unbound | unbound | 1.3.1 | cpe:2.3:a:unbound:unbound:1.3.1:*:*:*:*:*:*:* |
| unbound | unbound | 1.3.2 | cpe:2.3:a:unbound:unbound:1.3.2:*:*:*:*:*:*:* |
| unbound | unbound | 1.3.3 | cpe:2.3:a:unbound:unbound:1.3.3:*:*:*:*:*:*:* |
| unbound | unbound | 1.3.4 | cpe:2.3:a:unbound:unbound:1.3.4:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.0 | cpe:2.3:a:unbound:unbound:1.4.0:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.1 | cpe:2.3:a:unbound:unbound:1.4.1:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.2 | cpe:2.3:a:unbound:unbound:1.4.2:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.3 | cpe:2.3:a:unbound:unbound:1.4.3:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.4 | cpe:2.3:a:unbound:unbound:1.4.4:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.5 | cpe:2.3:a:unbound:unbound:1.4.5:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.6 | cpe:2.3:a:unbound:unbound:1.4.6:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.7 | cpe:2.3:a:unbound:unbound:1.4.7:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.8 | cpe:2.3:a:unbound:unbound:1.4.8:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.9 | cpe:2.3:a:unbound:unbound:1.4.9:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.10 | cpe:2.3:a:unbound:unbound:1.4.10:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.11 | cpe:2.3:a:unbound:unbound:1.4.11:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.12 | cpe:2.3:a:unbound:unbound:1.4.12:*:*:*:*:*:*:* |
| unbound | unbound | 1.4.14 | cpe:2.3:a:unbound:unbound:1.4.14:rc1:*:*:*:*:*:* |