CVE-2019-1858— Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnerability
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I. Basic Information for CVE-2019-1858
Vulnerability Information
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Vulnerability Title
Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the SNMP application to leak system memory, which could cause an affected device to restart unexpectedly. The vulnerability is due to improper error handling when processing inbound SNMP packets. An attacker could exploit this vulnerability by sending multiple crafted SNMP packets to an affected device. A successful exploit could allow the attacker to cause the SNMP application to leak system memory because of an improperly handled error condition during packet processing. Over time, this memory leak could cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco FXOS Software和Cisco NX-OS Software 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。 Cisco FXOS Software和Cisco NX-OS Software中的Simple Network Management Protocol输入数据包处理器存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。以下产品及版本受到影响：Cisco Firepower 4100 Series；Firepower 9300 Security Appliances；MD
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Firepower Extensible Operating System (FXOS) | unspecified ~ n/a | - |
II. Public POCs for CVE-2019-1858
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-snmp-dosvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2019-1858
Same Patch Batch · Cisco · 2019-05-16 · 18 CVEs total
| CVE-2019-1832 | Cisco Firepower Threat Defense Software Detection Engine Policy Bypass Vulnerability | |
| CVE-2019-1825 | Cisco Prime Infrastructure and Evolved Programmable Network Manager SQL Injection Vulnerab | |
| CVE-2019-1824 | Cisco Prime Infrastructure and Evolved Programmable Network Manager SQL Injection Vulnerab | |
| CVE-2019-1823 | Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution | |
| CVE-2019-1822 | Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution | |
| CVE-2019-1821 | Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution | |
| CVE-2019-1820 | Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera | |
| CVE-2019-1819 | Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera | |
| CVE-2019-1818 | Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera | |
| CVE-2019-1780 | Cisco FXOS and NX-OS Software Command Injection Vulnerability | |
| CVE-2019-1860 | Cisco Unified Intelligence Center Remote File Injection Vulnerability | |
| CVE-2019-1853 | Cisco AnyConnect Secure Mobility Client for Linux Out-of-Bounds Memory Read Vulnerability | |
| CVE-2019-1851 | Cisco Identity Services Engine Arbitrary Client Certificate Creation Vulnerability | |
| CVE-2019-1849 | Cisco IOS XR Software BGP MPLS-Based EVPN Denial of Service Vulnerability | |
| CVE-2019-1846 | Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers MPLS OAM Deni | |
| CVE-2019-1833 | Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass Vulnerability | |
| CVE-2019-1768 | Cisco NX-OS Software Buffer Overflow and Command Injection Vulnerability |
IV. Related Vulnerabilities
Same product: Cisco Firepower Extensible Operating System (FXOS)
- CVE-2026-20099
Cisco UCS Manager and FXOS Software Command Injection Vulner - CVE-2026-20091
Cisco UCS Manager and FXOS Software Stored Cross-Site Script - CVE-2022-20865
Cisco FXOS Software Command Injection Vulnerability - CVE-2020-3455
Cisco FXOS Software for Firepower 4100/9300 Series Appliance - CVE-2020-3459
Cisco FXOS Software for Firepower 4100/9300 Series Command I
Same vendor: Cisco
- CVE-2026-20219
Cisco Slido 安全漏洞 - CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability - CVE-2026-20035
Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-20
V. Comments for CVE-2019-1858
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