CVE-2023-20223Network attack vector

Unauthenticated data access via unchecked API requests

Published Sep 27, 2023 · Updated Aug 2, 2024

Improper access control in Cisco Catalyst Center affected releases allows remote attackers to read and modify internal-service data. An API handler does not enforce access controls on crafted requests and exposes a repository used by an internal service. Exploitation requires no authentication, but Disaster Recovery must be enabled; successful requests expose and alter only data handled by that service.

CVSS severity8.6
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Cisco Catalyst Center affected releases allows remote attackers to read and modify internal-service data. An API handler does not enforce access controls on crafted requests and exposes a repository used by an internal service. Exploitation requires no authentication, but Disaster Recovery must be enabled; successful requests expose and alter only data handled by that service.

The record

CVE
CVE-2023-20223
Published
Sep 27, 2023
Updated
Aug 2, 2024
Vendor
ClamAV
Product
Cisco Catalyst Center
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2.2.1.3
  2. Affected versionversion=2.2.3.3
  3. Affected versionversion=2.2.3.4
  4. Affected versionversion=2.2.3.5
  5. Affected versionversion=2.2.3.6
  6. Affected versionversion=2.3.3.4
  7. Affected versionversion=2.3.3.5
  8. Affected versionversion=2.3.3.6
  9. Affected versionversion=2.3.3.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Catalyst Centerversion=2.2.1.3; version=2.2.3.3; version=2.2.3.4; version=2.2.3.5; version=2.2.3.6; version=2.3.3.4; version=2.3.3.5; version=2.3.3.6; version=2.3.3.7

Published CVSS scores

8.6CiscoCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/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.

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-284Improper Access Control
T1190Exploit Public-Facing Application

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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