Is CVE-2023-41034 actively exploited?

No active exploitation of CVE-2023-41034 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-41034 be exploited remotely?

Yes. CVE-2023-41034 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-41034?

CVE-2023-41034 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-41034

CRITICAL

CVE-2023-41034

CWE-611Published: August 31, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Eclipse Leshan is a device management server and client Java implementation. In affected versions DDFFileParser` and `DefaultDDFFileValidator` (and so `ObjectLoader`) are vulnerable to `XXE Attacks`. A DDF file is a LWM2M format used to store LWM2M object description. Leshan users are impacted only if they parse untrusted DDF files (e.g. if they let external users provide their own model), in that case they MUST upgrade to fixed version. If you parse only trusted DDF file and validate only with trusted xml schema, upgrading is not mandatory. This issue has been fixed in versions 1.5.0 and 2.0.0-M13. Users are advised to upgrade. There are no known workarounds for this vulnerability.

NVD Source

Risk Analysis

Eclipse Leshan is susceptible to XML External Entity (XXE) attacks when parsing untrusted DDF files, which could lead to unauthorized data access or system compromise. The critical severity rating reflects the potential for full system impact if an attacker provides malicious input.

There is no known public exploit, and it is not in the CISA KEV. The vulnerability is remotely exploitable if the application processes untrusted DDF files.

Recommended Action

Upgrade to Leshan version 1.5.0 or 2.0.0-M13. If parsing only trusted files, ensure strict XML schema validation is enforced.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-41034 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.