CVE-2026-20048
CVE-2026-20048: 1 tracked advisory record across Cisco. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Cisco
1 advisory- Advisory severityHigh7.7
High [CVE-2026-20048] Cisco Nexus 9000 Series Fabric Switches in ACI Mode SNMP Denial of Service Vulnerability
cisco-sa-nxos-dsnmp-cNN39UhSource published Source updated
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 …
- Related products — impact not confirmed
- Cisco NX-OS System Software in ACI Mode 15.2(1g)
- Cisco NX-OS System Software in ACI Mode 15.2(2e)
- Cisco NX-OS System Software in ACI Mode 15.2(2f)
- Cisco NX-OS System Software in ACI Mode 15.2(2g)
5 more entries in the full advisory.
- Source-reported affected versions
- Scope: This vulnerability affects Cisco Nexus 9000 Series Fabric Switches in ACI mode when both of the following conditions are met:
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
- Workarounds
- A workaround for this vulnerability exists for AAA providers that are configured with IPv4 DNS names. Update all AAA providers from a DNS name (hostname or FQDN) to an IPv4 address configuration. For more information about AAA configuration, see Cisco Application Centric Infrastructure Fundamentals, Release 6.1(x).
- There is no workaround for IPv6 configurations.
- While this workaround has been deployed and proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployme…
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