CVE-2023-52252Public exploitNetwork attack vector

Remote code execution via wildcard CORS

Published Dec 30, 2023 · Updated Aug 2, 2024

Unified Remote 3.13.0 allows remote attackers to execute arbitrary Lua code through its Remote upload endpoint without authentication. A wildcard Access-Control-Allow-Origin response permits cross-origin requests to that endpoint, which accepts Lua content and executes it. Remote unauthenticated access therefore enables code execution with confidentiality, integrity, and availability impact.

CVSS severity9.8
Critical
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unified Remote 3.13.0 allows remote attackers to execute arbitrary Lua code through its Remote upload endpoint without authentication. A wildcard Access-Control-Allow-Origin response permits cross-origin requests to that endpoint, which accepts Lua content and executes it. Remote unauthenticated access therefore enables code execution with confidentiality, integrity, and availability impact.

The record

CVE
CVE-2023-52252
Published
Dec 30, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 30, 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

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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

9.8NVDCVSS: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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1210Exploitation of Remote Services

Public exploit references

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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