The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.
結論預警: CVE-2011-4868 綜合評估為中等風險（58/100）：CVSS 技術影響為中級，利用機率（EPSS 3.61%） 核心證據: 近一日 EPSS 上升 +2.77%，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 | 0.85% | 3.61% | +2.77% |
| 2 | 2025-09-15 | 0.93% | 0.85% | -0.09% |
| 3 | 2025-03-30 | — | 0.93% | — |
完整 EPSS 歷史 （共 8 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 |
|---|---|---|---|---|---|---|
| 6.1 | 2.0 | MEDIUM |
|
6.5 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2011-4868 low priority: Debian including 1 source packages (isc-dhcp), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. | https://security-tracker.debian.org/tracker/CVE-2011-4868 |
gentoo
|
normal | CVE-2011-4868: 1 GLSA(s) (201301-06), 1 atom(s) (net-misc/dhcp); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-4868 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2011-4868 |
suse
|
medium | CVE-2011-4868 severity moderate: SUSE including 56 source package names (dhcp-4.2.3.P2-0.7.2, dhcp-4.2.4.P2-0.16.15, …), 88 product×package rows across 33 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (33 product lines)): Fixed 88. | https://www.suse.com/security/cve/CVE-2011-4868/ |
ubuntu
|
low | CVE-2011-4868 low priority: Ubuntu including 1 source packages (isc-dhcp), 7 status rows across 7 suites (hardy, lucid, maverick, natty, oneiric, precise, upstream): DNE 3, not-affected 3, needs-triage 1. | https://ubuntu.com/security/CVE-2011-4868 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| isc | dhcp | <= 4.2.3 | cpe:2.3:a:isc:dhcp:*:p1:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:*:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel1:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel10:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel11:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel12:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel13:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel14:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel15:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel16:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel18:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel19:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel2:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel20:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel21:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel22:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel23:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel24:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel3:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel4:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel5:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel6:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel7:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel8:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:beta2:patchlevel9:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc1:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc1:patchlevel1:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc10:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc11:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc12:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc2:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc2:patchlevel1:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc3:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc4:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc5:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc6:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc7:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc8:*:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc8:patchlevel1:*:*:*:*:* |
| isc | dhcp | 3.0 | cpe:2.3:a:isc:dhcp:3.0:rc9:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:*:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc1:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc10:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc11:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc12:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc13:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc14:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc2:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc3:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc4:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc5:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc6:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc7:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc8:*:*:*:*:*:* |
| isc | dhcp | 3.0.1 | cpe:2.3:a:isc:dhcp:3.0.1:rc9:*:*:*:*:*:* |
| isc | dhcp | 3.0.2 | cpe:2.3:a:isc:dhcp:3.0.2:*:*:*:*:*:*:* |
| isc | dhcp | 3.0.2 | cpe:2.3:a:isc:dhcp:3.0.2:b1:*:*:*:*:*:* |
| isc | dhcp | 3.0.2 | cpe:2.3:a:isc:dhcp:3.0.2:rc1:*:*:*:*:*:* |
| isc | dhcp | 3.0.2 | cpe:2.3:a:isc:dhcp:3.0.2:rc2:*:*:*:*:*:* |
| isc | dhcp | 3.0.2 | cpe:2.3:a:isc:dhcp:3.0.2:rc3:*:*:*:*:*:* |
| isc | dhcp | 3.0.3 | cpe:2.3:a:isc:dhcp:3.0.3:*:*:*:*:*:*:* |
| isc | dhcp | 3.0.3 | cpe:2.3:a:isc:dhcp:3.0.3:b1:*:*:*:*:*:* |
| isc | dhcp | 3.0.3 | cpe:2.3:a:isc:dhcp:3.0.3:b2:*:*:*:*:*:* |
| isc | dhcp | 3.0.3 | cpe:2.3:a:isc:dhcp:3.0.3:b3:*:*:*:*:*:* |
| isc | dhcp | 3.0.4 | cpe:2.3:a:isc:dhcp:3.0.4:*:*:*:*:*:*:* |
| isc | dhcp | 3.0.4 | cpe:2.3:a:isc:dhcp:3.0.4:b1:*:*:*:*:*:* |
| isc | dhcp | 3.0.4 | cpe:2.3:a:isc:dhcp:3.0.4:b2:*:*:*:*:*:* |
| isc | dhcp | 3.0.4 | cpe:2.3:a:isc:dhcp:3.0.4:b3:*:*:*:*:*:* |
| isc | dhcp | 3.0.4 | cpe:2.3:a:isc:dhcp:3.0.4:rc1:*:*:*:*:*:* |
| isc | dhcp | 3.0.5 | cpe:2.3:a:isc:dhcp:3.0.5:*:*:*:*:*:*:* |
| isc | dhcp | 3.0.5 | cpe:2.3:a:isc:dhcp:3.0.5:rc1:*:*:*:*:*:* |
| isc | dhcp | 3.0.6 | cpe:2.3:a:isc:dhcp:3.0.6:rc1:*:*:*:*:*:* |
| isc | dhcp | 3.1.0 | cpe:2.3:a:isc:dhcp:3.1.0:*:*:*:*:*:*:* |
| isc | dhcp | 3.1.0 | cpe:2.3:a:isc:dhcp:3.1.0:a1:*:*:*:*:*:* |
| isc | dhcp | 3.1.0 | cpe:2.3:a:isc:dhcp:3.1.0:a2:*:*:*:*:*:* |
| isc | dhcp | 3.1.0 | cpe:2.3:a:isc:dhcp:3.1.0:a3:*:*:*:*:*:* |
| isc | dhcp | 3.1.0 | cpe:2.3:a:isc:dhcp:3.1.0:b1:*:*:*:*:*:* |
| isc | dhcp | 3.1.0 | cpe:2.3:a:isc:dhcp:3.1.0:b2:*:*:*:*:*:* |
| isc | dhcp | 4.0.0 | cpe:2.3:a:isc:dhcp:4.0.0:*:*:*:*:*:*:* |
| isc | dhcp | 4.0.0 | cpe:2.3:a:isc:dhcp:4.0.0:a1:*:*:*:*:*:* |