The DHCP server on Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services Module (ASASM) in Cisco Catalyst 6500 series devices, with software 7.0 before 7.2(5.8), 7.1 before 7.2(5.8), 7.2 before 7.2(5.8), 8.0 before 8.0(5.28), 8.1 before 8.1(2.56), 8.2 before 8.2(5.27), 8.3 before 8.3(2.31), 8.4 before 8.4(3.10), 8.5 before 8.5(1.9), and 8.6 before 8.6(1.5) does not properly allocate memory for DHCP packets, which allows remote attackers to cause a denial of service (device reload) via a series of crafted IPv4 packets, aka Bug ID CSCtw84068.
结论预警: CVE-2012-4643 综合评估为中等风险（54.4/100）：CVSS 技术影响为高级，利用概率（EPSS 1.53%） 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 | 0.56% | 1.53% | +0.97% |
| 2 | 2025-03-30 | 0.48% | 0.56% | +0.09% |
| 3 | 2025-03-29 | — | 0.48% | — |
完整 EPSS 历史 （共 5 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 |
|---|---|---|---|---|---|---|
| 7.1 | 2.0 | HIGH |
|
8.6 | 6.9 | [email protected] |
| 厂商 | 产品 | 版本 | 原始 CPE |
|---|---|---|---|
| cisco | adaptive_security_appliance_software | 7.0 | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.0\(0\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0\(0\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.0\(1\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0\(1\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.0\(2\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0\(2\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.0\(4\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0\(4\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.0\(5\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0\(5\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.0\(5.2\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0\(5.2\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.1 | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.1:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.1\(2\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.1\(2\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.1\(2.5\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.1\(2.5\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.1\(2.27\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.1\(2.27\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.1\(2.48\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.1\(2.48\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.1\(2.49\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.1\(2.49\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.1\(5\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.1\(5\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2 | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(1\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(1\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(1.22\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(1.22\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.5\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.5\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.7\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.7\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.8\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.8\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.10\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.10\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.14\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.14\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.15\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.15\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.16\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.16\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.17\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.17\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.18\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.18\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.19\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.19\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(2.48\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(2.48\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(3\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(3\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(4\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(4\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 7.2\(5\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2\(5\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.0 | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.0\(2\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0\(2\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.0\(3\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0\(3\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.0\(4\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0\(4\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.0\(5\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0\(5\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.1 | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.1:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2 | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2\(1\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2\(1\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2\(2\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2\(2\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2\(3\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2\(3\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2\(3.9\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2\(3.9\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2\(4\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2\(4\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2\(4.1\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2\(4.1\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2\(4.4\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2\(4.4\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.2\(5\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.2\(5\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.3\(1\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.3\(1\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.3\(2\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.3\(2\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.4 | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.4\(1\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4\(1\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.4\(1.11\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4\(1.11\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.4\(2\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4\(2\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.4\(2.11\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.4\(2.11\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.5 | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.5:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.5\(1\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.5\(1\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.5\(1.4\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.5\(1.4\):*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.6 | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.6:*:*:*:*:*:*:* |
| cisco | adaptive_security_appliance_software | 8.6\(1\) | cpe:2.3:o:cisco:adaptive_security_appliance_software:8.6\(1\):*:*:*:*:*:*:* |
| cisco | 5500_series_adaptive_security_appliance | — | cpe:2.3:h:cisco:5500_series_adaptive_security_appliance:*:*:*:*:*:*:*:* |
| cisco | catalyst_6500 | — | cpe:2.3:h:cisco:catalyst_6500:*:*:*:*:*:*:*:* |
| cisco | catalyst_6503-e | — | cpe:2.3:h:cisco:catalyst_6503-e:-:*:*:*:*:*:*:* |
| cisco | catalyst_6504-e | — | cpe:2.3:h:cisco:catalyst_6504-e:-:*:*:*:*:*:*:* |
| cisco | catalyst_6506-e | — | cpe:2.3:h:cisco:catalyst_6506-e:-:*:*:*:*:*:*:* |
| cisco | catalyst_6509-e | — | cpe:2.3:h:cisco:catalyst_6509-e:-:*:*:*:*:*:*:* |
| cisco | catalyst_6509-neb-a | — | cpe:2.3:h:cisco:catalyst_6509-neb-a:-:*:*:*:*:*:*:* |
| cisco | catalyst_6509-v-e | — | cpe:2.3:h:cisco:catalyst_6509-v-e:-:*:*:*:*:*:*:* |
| cisco | catalyst_6513 | — | cpe:2.3:h:cisco:catalyst_6513:-:*:*:*:*:*:*:* |
| cisco | catalyst_6513-e | — | cpe:2.3:h:cisco:catalyst_6513-e:-:*:*:*:*:*:*:* |