CVE-2026-20048
published 2026-02-25CVE-2026-20048: A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authenticated…
PriorityP346high7.7CVSS 3.1
AVNACLPRLUINSCCNINAH
EPSS
0.30%
22.2th percentile
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper processing when parsing SNMP requests. An attacker could exploit this vulnerability by continuously sending SNMP queries to a specific MIB of an affected device. A successful exploit could allow the attacker to cause a kernel panic on the device, resulting in a reload and a DoS condition.
Note: This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMPv1 or SNMPv2c, the attacker must have a valid read-only SNMP community string for the affected system. To exploit this vulnerability through SNMPv3, the attacker must have valid SNMP user credentials for the affected system.
Affected
58 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
| cisco | cisco_nx-os_system_software_in_aci_mode | — | — |
CVSS provenance
nvdv3.17.7HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
vendor_cisco7.7HIGH
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Cisco
Cisco Nexus 9000 Series Fabric Switches in ACI Mode SNMP Denial of Service Vulnerability
vendor_cisco·2026-02-25·CVSS 7.7
CVE-2026-20048 [HIGH] CWE-789 Cisco Nexus 9000 Series Fabric Switches in ACI Mode SNMP Denial of Service Vulnerability
Cisco Nexus 9000 Series Fabric Switches in ACI Mode SNMP Denial of Service Vulnerability
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper processing when parsing SNMP requests. An attacker could exploit this vulnerability by continuously sending SNMP queries to a specific MIB of an affected device. A successful exploit could allow the attacker to cause a kernel panic on the device, resulting in a reload and a DoS condition.
Note: This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMPv1 or SNMPv2c, the attacker must h
Cisco
Cisco Nexus 9000 Series Fabric Switches in ACI Mode SNMP Denial of Service Vulnerability
vendor_cisco·CVSS 3.1
CVE-2026-20048 Cisco Nexus 9000 Series Fabric Switches in ACI Mode SNMP Denial of Service Vulnerability
CVE-2026-20048: Cisco Nexus 9000 Series Fabric Switches in ACI Mode SNMP Denial of Service Vulnerability
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper processing when parsing SNMP requests. An attacker could exploit this vulnerability by continuously sending SNMP queries to a specific MIB of an affected device. A successful exploit could allow the attacker to cause a kernel panic on the device, resulting in a reload and a DoS condition. Note: This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMPv1 or SNMPv2c, the a
GHSA
GHSA-c9vx-x9q2-ffx8: A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authe
ghsa_unreviewed·2026-02-25
CVE-2026-20048 [HIGH] CWE-789 GHSA-c9vx-x9q2-ffx8: A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authe
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper processing when parsing SNMP requests. An attacker could exploit this vulnerability by continuously sending SNMP queries to a specific MIB of an affected device. A successful exploit could allow the attacker to cause a kernel panic on the device, resulting in a reload and a DoS condition.
Note: This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMPv1 or SNMPv2c, the attacker must have a valid read-only SNMP community string for the affected system. To exploit this vulne
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-02-25
Published