Skip to content
fr Sign in
7.4 High

CVE-2026-20033 A vulnerability in Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, adjacent attacker…

Description

A vulnerability in Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation when processing specific Ethernet frames. An attacker could exploit this vulnerability by sending a crafted Ethernet frame to the management interface of an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. Note: Only the out-of-band (OOB) management interface is affected.

Affected products and versions

Product Affected versions Fixed in
Cisco NX-OS System Software in ACI Mode Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Cisco NX-OS System Software in ACI Mode

The 22 CVEs of Cisco NX-OS System Software in ACI Mode →
CVE-2026-76458 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has… 8.6 High CVE-2026-76459 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has… 9.8 Critical CVE-2026-76455 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has… 9.8 Critical CVE-2026-76457 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has… 8.6 High
Track this CVE