CVE-2023-23128Network attack vector

Disputed cross-origin access via wildcard CORS headers

Published Feb 1, 2023 · Updated Mar 27, 2025

CORS behavior in ConnectWise Control 22.8.10013.8329 lets remote attackers request two endpoints through a user's browser. The unnamed endpoints return Access-Control-Allow-Origin wildcard headers for requests from untrusted origins; their functions and response data are undisclosed. A claimed attack requires browser user interaction, but ConnectWise states that the wildcarding supports intended functionality, creates no risk, and makes the report invalid.

CVSS severity6.1
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CORS behavior in ConnectWise Control 22.8.10013.8329 lets remote attackers request two endpoints through a user's browser. The unnamed endpoints return Access-Control-Allow-Origin wildcard headers for requests from untrusted origins; their functions and response data are undisclosed. A claimed attack requires browser user interaction, but ConnectWise states that the wildcarding supports intended functionality, creates no risk, and makes the report invalid.

The record

CVE
CVE-2023-23128
Published
Feb 1, 2023
Updated
Mar 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-942
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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-942Permissive Cross-domain Policy with Untrusted Domains

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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