CVE-2019-1963: high-severity vulnerability in Cisco Unified Computing System (Managed)
Cisco FXOS and NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 1.6%
A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application on an affected device to restart unexpectedly. The vulnerability is due to improper validation of Abstract Syntax Notation One (ASN.1)-encoded variables in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the SNMP daemon on the affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Affected products
Cisco · Cisco Unified Computing System (Managed)Related CVEs — Cisco Unified Computing System (Managed)
In the same product, most dangerous first.
CVE-2020-3119HIGHCisco NX-OS Software Cisco Discovery Protocol Remote Code Execution VulnerabilityEPSS 4.8%CVE-2026-76455CRITICALCisco NX-OS Software Security Hardening Release: October 2026 - Improper Access Control VulnerabilitiesEPSS 4.0%CVE-2025-20292MEDIUMCisco NXOS Software Command Injection VulnerabilityEPSS 3.1%CVE-2019-1962HIGHCisco NX-OS Software Cisco Fabric Services over IP Denial of Service VulnerabilityEPSS 2.0%CVE-2020-3172HIGHCisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service VulnerabilityEPSS 1.9%CVE-2021-34736MEDIUMCisco Integrated Management Controller GUI Denial of Service VulnerabilityEPSS 1.3%