Is CVE-2023-40503 actively exploited?

No active exploitation of CVE-2023-40503 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-40503 be exploited remotely?

Yes. CVE-2023-40503 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-40503?

CVE-2023-40503 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2023-40503

CWE-611Published: May 3, 2024· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

LG Simple Editor saveXmlFile XML External Entity Processing Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of LG Simple Editor. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the saveXmlFile method. Due to the improper restriction of XML External Entity (XXE) references, a crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM.

. Was ZDI-CAN-19952.

NVD Source

Technical Analysis

CVE-2023-40503 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.