CVE-2023-40506Network attack vector

SYSTEM-context data disclosure via copyContent XXE

Published May 3, 2024 · Updated Sep 18, 2024

XXE in LG Simple Editor 3.21.0 and earlier allows remote attackers to disclose SYSTEM-accessible data through the copyContent command. Its XML parser resolves a crafted external-entity URI and embeds the retrieved content into the document for subsequent processing. Exploitation requires no authentication or user interaction and exposes data readable by the SYSTEM account without reported integrity or availability impact.

CVSS severity7.5
High
EPSS probability1.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in LG Simple Editor 3.21.0 and earlier allows remote attackers to disclose SYSTEM-accessible data through the copyContent command. Its XML parser resolves a crafted external-entity URI and embeds the retrieved content into the document for subsequent processing. Exploitation requires no authentication or user interaction and exposes data readable by the SYSTEM account without reported integrity or availability impact.

The record

CVE
CVE-2023-40506
Published
May 3, 2024
Updated
Sep 18, 2024
Vendor
LG Electronics
Product
LG Simple Editor
Classifications
CWE-611, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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=0 <3.21.0
  2. Affected versionversion=LG Simple Editor 3.21.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LG Electronics · LG Simple Editorversion=0 <3.21.0; version=LG Simple Editor 3.21.0

Published CVSS scores

7.5Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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