7.4

CVE-2026-20033

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.
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Produkt Cisco NX-OS System Software in ACI Mode
Default Statusunknown
Version 15.2(1g)
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Version 15.2(2e)
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Version 15.2(2f)
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Version 15.2(2g)
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Version 15.2(2h)
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Version 15.2(3f)
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Version 15.2(3e)
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Version 15.2(3g)
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Version 15.2(4d)
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Version 15.2(4e)
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Version 15.2(5c)
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Version 15.2(5d)
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Version 16.0(1g)
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Version 15.2(5e)
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Version 15.2(4f)
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Version 15.2(6e)
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Version 15.2(6h)
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Version 16.0(1j)
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Version 15.2(6g)
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Version 15.2(7f)
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Version 15.2(7g)
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Version 16.0(2h)
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Version 15.2(8d)
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Version 16.0(2j)
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Version 15.2(8e)
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Version 16.0(3d)
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Version 16.0(3e)
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Version 15.2(8f)
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Version 15.2(8g)
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Version 15.3(1d)
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Version 15.2(8h)
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Version 16.0(4c)
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Version 15.3(2a)
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Version 15.2(8i)
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Version 16.0(5h)
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Version 15.3(2b)
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Version 16.0(3g)
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Version 16.0(5j)
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Version 15.3(2c)
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Version 16.0(6c)
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Version 15.3(2d)
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Version 16.1(1f)
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Version 16.0(7e)
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Version 16.0(8e)
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Version 15.3(2e)
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Version 16.0(8f)
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Version 16.1(2f)
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Version 16.1(2g)
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Version 15.3(2f)
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Version 16.0(9c)
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Version 16.1(3f)
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Version 16.0(9d)
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Version 16.0(6h)
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Version 16.0(8h)
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Version 16.1(3g)
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Version 16.0(9e)
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Version 16.1(4h)
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Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.045
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
psirt@cisco.com 7.4 2.8 4
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-805 Buffer Access with Incorrect Length Value

The product uses a sequential operation to read or write a buffer, but it uses an incorrect length value that causes it to access memory that is outside of the bounds of the buffer.