A vulnerability in Cisco NX-OS System Software could allow an authenticated, local attacker to bypass signature verification when loading a software patch. The vulnerability is due to insufficient NX-OS signature verification for software patches. An authenticated, local attacker could exploit this vulnerability to bypass signature verification and load a crafted, unsigned software patch on a targeted device. The attacker would need valid administrator credentials to perform this exploit. This vulnerability affects the following products running Cisco NX-OS System Software: Multilayer Director Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Unified Computing System Manager. Cisco Bug IDs: CSCvf16494, CSCvf23655.
結論預警: CVE-2017-12331 綜合評估為低風險（31.9/100）：CVSS 技術影響為中級，利用機率偏低（EPSS 0.23%） 強制指令: 持續追蹤利用情報與 EPSS 變化，並適時複評優先級。
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 | 0.04% | 0.23% | +0.19% |
| 2 | 2023-03-07 | 0.89% | 0.04% | -0.85% |
| 3 | 2022-02-04 | — | 0.89% | — |
完整 EPSS 歷史 （共 4 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 |
|---|---|---|---|---|---|---|
| 6.7 | 3.0 | MEDIUM |
|
0.8 | 5.9 | [email protected] |
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| cisco | nx-os | 8.1\(1\) | cpe:2.3:o:cisco:nx-os:8.1\(1\):*:*:*:*:*:*:* |
| cisco | unified_computing_system | 7.0\(0\)hsk\(0.357\) | cpe:2.3:a:cisco:unified_computing_system:7.0\(0\)hsk\(0.357\):*:*:*:*:*:*:* |
| URL | 標籤 |
|---|---|
| http://www.securityfocus.com/bid/102159 | |
| http://www.securitytracker.com/id/1039930 | Third Party Advisory VDB Entry |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos | Vendor Advisory |