CVE-2023-40238
MEDIUMEPSS 77th pctlDescription
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 to fix
This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Elevated risk: more likely to be exploited than 77% of all known CVEs.
References
Related Vulnerabilities
Other CWE-312 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-50719 | High | 7.5 | 84% | - | Fix |
| CVE-2022-26148 | Critical | 9.8 | 53% | - | Fix |
| CVE-2020-24577 | High | 7.5 | 19% | - | Fix |
| CVE-2021-27140 | High | 7.5 | 19% | - | - |
| CVE-2021-27176 | High | 7.5 | 19% | - | - |
| CVE-2021-27174 | High | 7.5 | 19% | - | - |
Common questions
How do I fix CVE-2023-40238?
Published advisories record a fix for 180 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2023-40238 being actively exploited?
Not that we know of. CVE-2023-40238 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 77% of all scored CVEs.
How severe is CVE-2023-40238?
CVE-2023-40238 has a CVSS v3 base score of 5.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2023-40238 affect?
Published advisories record a fix for celsius c780 firmware (NVD), celsius h5511 firmware (NVD), celsius h7510 firmware (NVD), celsius h7613 firmware (NVD), and 176 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-02-25.