How severe is CVE-2023-40238?

CVE-2023-40238 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-40238 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40238?

CVE-2023-40238 primarily affects Insyde Insydeh2o. In total, 187 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-40238?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-40238 published?

CVE-2023-40238 was published on 2023-12-07 and last updated on 2026-06-17.

CVE-2023-40238

CVE-2023-40238 is a medium-severity vulnerability in Insyde Insydeh2o with a CVSS 3.x base score of 5.5. 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-312.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-312
Affected product: Insyde Insydeh2o
Published: 2023-12-07
Last modified: 2026-06-17

Description

A LogoFAIL issue was discovered in BmpDecoderDxe in Insyde InsydeH2O with kernel 5.2 before 05.28.47, 5.3 before 05.37.47, 5.4 before 05.45.47, 5.5 before 05.53.47, and 5.6 before 05.60.47 for certain Lenovo devices. Image parsing of crafted BMP logo files can copy data to a specific address during the DXE phase of UEFI execution. This occurs because of an integer signedness error involving PixelHeight and PixelWidth during RLE4/RLE8 compression.

Frequently asked questions

What is CVE-2023-40238?: A LogoFAIL issue was discovered in BmpDecoderDxe in Insyde InsydeH2O with kernel 5.2 before 05.28.47, 5.3 before 05.37.47, 5.4 before 05.45.47, 5.5 before 05.53.47, and 5.6 before 05.60.47 for certain Lenovo devices. Image parsing of crafted BMP logo files can copy data to a specific address during the DXE phase of UEFI execution. This occurs because of an integer signedness error involving PixelHeight and PixelWidth during RLE4/RLE8 compression.
How severe is CVE-2023-40238?: CVE-2023-40238 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-40238 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40238?: CVE-2023-40238 primarily affects Insyde Insydeh2o. In total, 187 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-40238?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-40238 published?: CVE-2023-40238 was published on 2023-12-07 and last updated on 2026-06-17.

References

Affected products (187)

cpe:2.3:o:fujitsu:esprimo_d556\/2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d6011_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d6012_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d7010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d7010\/8_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d7011_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d7012_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d7013_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d738_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d757_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d9010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d9011_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d9012_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d9013_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d957_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d957\/e9x\+_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_d958_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_g5010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_g5011_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_g558_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_g6012_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_g9010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_g9012_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_g9013_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_k5010\/24_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_k557\/24_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_k558\/24_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p5010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p5011_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p557_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p558\/power_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p6012_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p7010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p7011_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p7012_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p7013_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p757_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p758_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p9010_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:esprimo_p9011_firmware:*:*:*:*:*:*:*:*

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