A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition, or to execute arbitrary code on an affected device. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted Smart Install message to an affected device on TCP port 4786. A successful exploit could allow the attacker to cause a buffer overflow on the affected device, which could have the following impacts: Triggering a reload of the device, Allowing the attacker to execute arbitrary code on the device, Causing an indefinite loop on the affected device that triggers a watchdog crash. Cisco Bug IDs: CSCvg76186.
結論預警: CVE-2018-0171 綜合評估為嚴重在野威脅(100/100):CVSS 技術影響為嚴重級,利用機率偏高(EPSS 99.51%,百分位 100%) 核心證據: CISA 已知被利用漏洞目錄(KEV)已於 2021-11-03 確認在野利用,影響 Cisco / IOS and IOS XE,弱點類型(CWE-20),攻擊者可能未經認證遠端取得高權限管理存取。 近一日 EPSS 上升 +6.61%,被利用關注度持續升高。 強制指令: CISA 處置期限已過,應以應急修補優先立即處理。
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: Cisco IOS and IOS XE Software Smart Install Remote Code Execution Vulnerability · CISA KEV 詳情
: 2021-11-03
: 2022-05-03
: Apply updates per vendor instructions.
| EDB-ID | 來源 | 類型 | 公開時間 | 連結 |
|---|---|---|---|---|
| 44451 | exploit_db | edb | 2018-03-29 | Exploit-DB ↗ |
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 | 92.90% | 99.51% | +6.61% |
| 2 | 2026-05-22 | 93.03% | 92.90% | -0.13% |
| 3 | 2026-05-11 | — | 93.03% | — |
完整 EPSS 歷史 (共 76 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 |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| URL | 標籤 |
|---|---|
| http://www.securityfocus.com/bid/103538 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1040580 | Third Party Advisory VDB Entry |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 | Third Party Advisory US Government Resource |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 | Third Party Advisory US Government Resource |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi2 | Vendor Advisory |
| https://www.darkreading.com/perimeter/attackers-exploit-cisco-switch-issue-as-vendor-warns-of-yet-another-critical-flaw/d/d-id/1331490 | Press/Media Coverage |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0171 | US Government Resource |