HOMEVULNERABILITIESCVE-2023-40239
HIGH

CVE-2023-40239

CWE-611Published: September 1, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2023-40239 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.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

lexmark164 product(s)
c2132 firmwarec2132cs310 firmwarecs310cs317 firmwarecs317cs410 firmwarecs410cs417 firmwarecs417cs510 firmwarecs510+152
Source: NVD CPE · 164 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://publications.lexmark.com/publications/security-alerts/CVE-2023-40239.pdf
ADVISORYhttps://publications.lexmark.com/publications/security-alerts/CVE-2023-40239.pdf

All References (2)

→
https://publications.lexmark.com/publications/security-alerts/CVE-2023-40239.pdfVendor Advisory
→
https://publications.lexmark.com/publications/security-alerts/CVE-2023-40239.pdfVendor Advisory

Quick Facts

CVE IDCVE-2023-40239
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-611
CISA KEVNo
Affected1 vendor(s)
PublishedSep 1, 2023

Related CVEs (CWE-611)

CVE-2018-1000644
10.0
CVE-2018-1000651
10.0
CVE-2017-7664
10.0
CVE-2018-1000124
10.0
CVE-2017-8110
10.0
CVE-2018-1000652
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-40239 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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