CVE-2023-20055Network attack vector

Privilege escalation via sensitive API response exposure

Published Mar 23, 2023 · Updated Oct 28, 2024

Information exposure in the management API of Cisco Catalyst Center allows remote authenticated users to obtain higher API privileges. The API returns sensitive information in responses that an Observer can inspect and reuse, under certain circumstances, to access the API as a higher-level account. Valid Observer credentials are required, and successful exploitation grants only the higher-level account's API privileges.

CVSS severity8.0
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in the management API of Cisco Catalyst Center allows remote authenticated users to obtain higher API privileges. The API returns sensitive information in responses that an Observer can inspect and reuse, under certain circumstances, to access the API as a higher-level account. Valid Observer credentials are required, and successful exploitation grants only the higher-level account's API privileges.

The record

CVE
CVE-2023-20055
Published
Mar 23, 2023
Updated
Oct 28, 2024
Vendor
ClamAV
Product
Cisco Catalyst Center
Classifications
CWE-200, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 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 privilegesauthenticated

What is affected?

ClamAV · Cisco Catalyst Centerversion=n/a

Published CVSS scores

8.0Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1068Exploitation for Privilege Escalation

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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