What is CVE-2026-20048?

CVE-2026-20048 is a high-severity vulnerability in Cisco Nx-os System Software In Aci Mode, classified under CWE-789. CVSS score: 7.7/10. Published 2026-02-25.

How severe is CVE-2026-20048?

High severity. CVSS v3 base score is 7.7 out of 10.

Vulnerability in Cisco Nx-os System Software In Aci Mode

CVE-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, remote attacker to cause a denial of service (DoS) condition on an affected dev…

EPSS: 0.003 (49.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.

Affected products

Cisco Nx-os System Software In Aci Mode — versions 15.2(1g), 15.2(2e), 15.2(2f)

Weakness classification (CWE)

CWE-789

References

cisco-sa-nxos-dsnmp-cNN39Uh

Frequently asked questions

What is CVE-2026-20048?: CVE-2026-20048 is a high-severity vulnerability in Cisco Nx-os System Software In Aci Mode, classified under CWE-789. CVSS score: 7.7/10. Published 2026-02-25.
How severe is CVE-2026-20048?: High severity. CVSS v3 base score is 7.7 out of 10.