How severe is CVE-2023-40239?

CVE-2023-40239 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-40239 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40239?

CVE-2023-40239 primarily affects Lexmark C2132 Firmware. In total, 82 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-40239?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-40239 published?

CVE-2023-40239 was published on 2023-09-01 and last updated on 2026-06-17.

CVE-2023-40239

CVE-2023-40239 is a high-severity vulnerability in Lexmark C2132 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-611.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Lexmark C2132 Firmware
Published: 2023-09-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-40239?: 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.
How severe is CVE-2023-40239?: CVE-2023-40239 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-40239 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40239?: CVE-2023-40239 primarily affects Lexmark C2132 Firmware. In total, 82 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-40239?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-40239 published?: CVE-2023-40239 was published on 2023-09-01 and last updated on 2026-06-17.

References

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

Affected products (82)

cpe:2.3:o:lexmark:c2132_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs310_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs317_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs410_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs417_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs510_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs517_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx310_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx317_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx410_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx417_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx510_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx517_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m1140\+_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m1140_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m1145_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m3150de_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m3150dn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m5155_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m5163de_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m5163dn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:m5170_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms310_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms312_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms315_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms317_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms410_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms415_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms417_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms510_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms517_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms610de_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms610dn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms617_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms710_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms711_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms810de_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms810dn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms811_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:ms812de_firmware:*:*:*:*:*:*:*:*

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