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CVE-2021-1587 Details

Description

A vulnerability in the VXLAN Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software, known as NGOAM, could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of specific packets with a Transparent Interconnection of Lots of Links (TRILL) OAM EtherType. An attacker could exploit this vulnerability by sending crafted packets, including the TRILL OAM EtherType of 0x8902, to a device that is part of a VXLAN Ethernet VPN (EVPN) fabric. A successful exploit could allow the attacker to cause an affected device to experience high CPU usage and consume excessive system resources, which may result in overall control plane instability and cause the affected device to reload. Note: The NGOAM feature is disabled by default.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CNA: [email protected]CVSS-B:8.6 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ngoam-dos-LTDb9Hv	CVE	PatchVendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ngoam-dos-LTDb9Hv	[email protected]	PatchVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-436	Interpretation Conflict	[email protected]
CWE-115	Misinterpretation of Input	[email protected]

Affected Products

Product	Versions
cisco nx-os	All versions
CPE cpe:2.3:o:cisco:nx-os:-:::::::* Remediation No remediation found in references.
cisco nexus 3000	All versions
CPE cpe:2.3:h:cisco:nexus_3000:-:::::::* Remediation No remediation found in references.
cisco nexus 3048	All versions
CPE cpe:2.3:h:cisco:nexus_3048:-:::::::* Remediation No remediation found in references.
cisco nexus 31108pc-v	All versions
CPE cpe:2.3:h:cisco:nexus_31108pc-v:-:::::::* Remediation No remediation found in references.
cisco nexus 31108tc-v	All versions
CPE cpe:2.3:h:cisco:nexus_31108tc-v:-:::::::* Remediation No remediation found in references.
cisco nexus 31128pq	All versions
CPE cpe:2.3:h:cisco:nexus_31128pq:-:::::::* Remediation No remediation found in references.
cisco nexus 3132c-z	All versions
CPE cpe:2.3:h:cisco:nexus_3132c-z:-:::::::* Remediation No remediation found in references.
cisco nexus 3132q-v	All versions
CPE cpe:2.3:h:cisco:nexus_3132q-v:-:::::::* Remediation No remediation found in references.
cisco nexus 3132q-x/3132q-xl	All versions
CPE cpe:2.3:h:cisco:nexus_3132q-x/3132q-xl:-:::::::* Remediation No remediation found in references.
cisco nexus 3164q	All versions
CPE cpe:2.3:h:cisco:nexus_3164q:-:::::::* Remediation No remediation found in references.
cisco nexus 3172pq/pq-xl	All versions
CPE cpe:2.3:h:cisco:nexus_3172pq/pq-xl:-:::::::* Remediation No remediation found in references.
cisco nexus 3172tq-xl	All versions
CPE cpe:2.3:h:cisco:nexus_3172tq-xl:-:::::::* Remediation No remediation found in references.
cisco nexus 3232c	All versions
CPE cpe:2.3:h:cisco:nexus_3232c:-:::::::* Remediation No remediation found in references.
cisco nexus 3264c-e	All versions
CPE cpe:2.3:h:cisco:nexus_3264c-e:-:::::::* Remediation No remediation found in references.
cisco nexus 3264q	All versions
CPE cpe:2.3:h:cisco:nexus_3264q:-:::::::* Remediation No remediation found in references.
cisco nexus 3408-s	All versions
CPE cpe:2.3:h:cisco:nexus_3408-s:-:::::::* Remediation No remediation found in references.
cisco nexus 34180yc	All versions
CPE cpe:2.3:h:cisco:nexus_34180yc:-:::::::* Remediation No remediation found in references.
cisco nexus 3432d-s	All versions
CPE cpe:2.3:h:cisco:nexus_3432d-s:-:::::::* Remediation No remediation found in references.
cisco nexus 3464c	All versions
CPE cpe:2.3:h:cisco:nexus_3464c:-:::::::* Remediation No remediation found in references.
cisco nexus 3524-x/xl	All versions
CPE cpe:2.3:h:cisco:nexus_3524-x/xl:-:::::::* Remediation No remediation found in references.
cisco nexus 3548-x/xl	All versions
CPE cpe:2.3:h:cisco:nexus_3548-x/xl:-:::::::* Remediation No remediation found in references.
cisco nexus 36180yc-r	All versions
CPE cpe:2.3:h:cisco:nexus_36180yc-r:-:::::::* Remediation No remediation found in references.
cisco nexus 3636c-r	All versions
CPE cpe:2.3:h:cisco:nexus_3636c-r:-:::::::* Remediation No remediation found in references.
cisco nexus 9000v	All versions
CPE cpe:2.3:h:cisco:nexus_9000v:-:::::::* Remediation No remediation found in references.
cisco nexus 92160yc-x	All versions
CPE cpe:2.3:h:cisco:nexus_92160yc-x:-:::::::* Remediation No remediation found in references.
cisco nexus 92300yc	All versions
CPE cpe:2.3:h:cisco:nexus_92300yc:-:::::::* Remediation No remediation found in references.
cisco nexus 92304qc	All versions
CPE cpe:2.3:h:cisco:nexus_92304qc:-:::::::* Remediation No remediation found in references.
cisco nexus 92348gc-x	All versions
CPE cpe:2.3:h:cisco:nexus_92348gc-x:-:::::::* Remediation No remediation found in references.
cisco nexus 9236c	All versions
CPE cpe:2.3:h:cisco:nexus_9236c:-:::::::* Remediation No remediation found in references.
cisco nexus 9272q	All versions
CPE cpe:2.3:h:cisco:nexus_9272q:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-ex	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-ex:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-ex-24	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-ex-24:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-fx	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-fx:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-fx-24	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-fx3p	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-fx3p:-:::::::* Remediation No remediation found in references.
cisco nexus 93120tx	All versions
CPE cpe:2.3:h:cisco:nexus_93120tx:-:::::::* Remediation No remediation found in references.
cisco nexus 93128tx	All versions
CPE cpe:2.3:h:cisco:nexus_93128tx:-:::::::* Remediation No remediation found in references.
cisco nexus 9316d-gx	All versions
CPE cpe:2.3:h:cisco:nexus_9316d-gx:-:::::::* Remediation No remediation found in references.
cisco nexus 93180lc-ex	All versions
CPE cpe:2.3:h:cisco:nexus_93180lc-ex:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-ex	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-ex:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-ex-24	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-ex-24:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-fx	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-fx:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-fx-24	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-fx-24:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-fx3	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-fx3:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-fx3s	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-fx3s:-:::::::* Remediation No remediation found in references.
cisco nexus 93216tc-fx2	All versions
CPE cpe:2.3:h:cisco:nexus_93216tc-fx2:-:::::::* Remediation No remediation found in references.
cisco nexus 93240yc-fx2	All versions
CPE cpe:2.3:h:cisco:nexus_93240yc-fx2:-:::::::* Remediation No remediation found in references.
cisco nexus 9332c	All versions
CPE cpe:2.3:h:cisco:nexus_9332c:-:::::::* Remediation No remediation found in references.
cisco nexus 9332pq	All versions
CPE cpe:2.3:h:cisco:nexus_9332pq:-:::::::* Remediation No remediation found in references.
cisco nexus 93360yc-fx2	All versions
CPE cpe:2.3:h:cisco:nexus_93360yc-fx2:-:::::::* Remediation No remediation found in references.
cisco nexus 9336c-fx2	All versions
CPE cpe:2.3:h:cisco:nexus_9336c-fx2:-:::::::* Remediation No remediation found in references.
cisco nexus 9336c-fx2-e	All versions
CPE cpe:2.3:h:cisco:nexus_9336c-fx2-e:-:::::::* Remediation No remediation found in references.
cisco nexus 9348gc-fxp	All versions
CPE cpe:2.3:h:cisco:nexus_9348gc-fxp:-:::::::* Remediation No remediation found in references.
cisco nexus 93600cd-gx	All versions
CPE cpe:2.3:h:cisco:nexus_93600cd-gx:-:::::::* Remediation No remediation found in references.
cisco nexus 9364c	All versions
CPE cpe:2.3:h:cisco:nexus_9364c:-:::::::* Remediation No remediation found in references.
cisco nexus 9364c-gx	All versions
CPE cpe:2.3:h:cisco:nexus_9364c-gx:-:::::::* Remediation No remediation found in references.
cisco nexus 9372px	All versions
CPE cpe:2.3:h:cisco:nexus_9372px:-:::::::* Remediation No remediation found in references.
cisco nexus 9372px-e	All versions
CPE cpe:2.3:h:cisco:nexus_9372px-e:-:::::::* Remediation No remediation found in references.
cisco nexus 9372tx	All versions
CPE cpe:2.3:h:cisco:nexus_9372tx:-:::::::* Remediation No remediation found in references.
cisco nexus 9372tx-e	All versions
CPE cpe:2.3:h:cisco:nexus_9372tx-e:-:::::::* Remediation No remediation found in references.
cisco nexus 9396px	All versions
CPE cpe:2.3:h:cisco:nexus_9396px:-:::::::* Remediation No remediation found in references.
cisco nexus 9396tx	All versions
CPE cpe:2.3:h:cisco:nexus_9396tx:-:::::::* Remediation No remediation found in references.
cisco nexus 9508	All versions
CPE cpe:2.3:h:cisco:nexus_9508:-:::::::* Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Sep 2, 2021	Reanalysis	[email protected]
Sep 2, 2021	Initial Analysis	[email protected]

CVE-2021-1587 Details

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