CVE-2023-40239

Certain Lexmark devices (such as CS310) before 2023-08-25 allow XXE attacks, leading to...

7.5 High

Certain Lexmark devices (such as CS310) before 2023-08-25 allow XXE attacks, leading to information disclosure. The fixed firmware version is LW80..P246, i.e., '' indicates that the full version specification varies across product model family, but firmware level P246 (or higher) is required to remediate the vulnerability.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.54%Up 0.5 points since Sep 2, 2023

What each source reports

NVD Score used 7.5

Record: CVE-2023-40239
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-611
Updated: 2026-11-02

CVE List No score

Record: CVE-2023-40239
Updated: 2026-11-02

EUVDEUVD-2023-44836 No score

Record: EUVD-2023-44836
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cwqw-75wv-wxpm 7.5

Certain Lexmark devices (such as CS310) before 2023-08-25 allow XXE attacks, leading to...

Record: GHSA-cwqw-75wv-wxpm
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-611
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-40239 is a high vulnerability (CVSS 7.5) in Lexmark Cs310, published September 1, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.54%, the 45th percentile. No source names a fixed version.