CVE-2022-20858Network attack vector

Malicious image execution via unauthenticated image service

Published Jul 21, 2022 · Updated Nov 1, 2024

Missing authentication in Cisco Nexus Dashboard allows remote attackers to read or upload container images over TCP. The container-image service accepts TCP connections on both data and management networks without enforcing access controls on image operations. No credentials or user interaction are required; uploaded malicious images execute only after the device reboots or a pod restarts.

CVSS severity8.2
High
EPSS probability1.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Cisco Nexus Dashboard allows remote attackers to read or upload container images over TCP. The container-image service accepts TCP connections on both data and management networks without enforcing access controls on image operations. No credentials or user interaction are required; uploaded malicious images execute only after the device reboots or a pod restarts.

The record

CVE
CVE-2022-20858
Published
Jul 21, 2022
Updated
Nov 1, 2024
Vendor
ClamAV
Product
Cisco Nexus Dashboard
Classifications
CWE-306, T1105
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Nexus Dashboardversion=n/a

Published CVSS scores

8.2Cisco PSIRTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
9.8NVD CVE recordCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-306Missing Authentication for Critical Function
T1105Ingress Tool Transfer

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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