CVE-2020-3175Network attack vector

Unauthenticated device reboot via mgmt0 traffic flood

Published Feb 26, 2020 · Updated Nov 15, 2024

Resource exhaustion in Cisco NX-OS Software on affected MDS 9000 switches allows remote attackers to reboot devices via mgmt0 traffic. The resource handling system fails to control resource usage when the management interface receives traffic at very high rates. No authentication or user interaction is required; sustained management-plane traffic can drive high CPU use, crash processes, or reboot the switch.

CVSS severity8.6
High
EPSS probability1.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Cisco NX-OS Software on affected MDS 9000 switches allows remote attackers to reboot devices via mgmt0 traffic. The resource handling system fails to control resource usage when the management interface receives traffic at very high rates. No authentication or user interaction is required; sustained management-plane traffic can drive high CPU use, crash processes, or reboot the switch.

The record

CVE
CVE-2020-3175
Published
Feb 26, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco NX-OS Software
Classifications
CWE-664, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco NX-OS Softwareversion=unspecified <n/a

Published CVSS scores

8.6CiscoCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-664Improper Control of a Resource Through its Lifetime
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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