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CVE-2023-40238

16
FAUCET Score

CVE-2023-40238 is a LogoFAIL vulnerability in Insyde InsydeH2O firmware, specifically affecting BmpDecoderDxe in certain Lenovo devices and other products from Fujitsu and Insyde. This medium-severity vulnerability (CVSS 5.5) stems from an integer signedness error during image parsing of crafted BMP logo files, allowing data to be copied to specific memory addresses during the UEFI DXE phase, potentially leading to a denial of service. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, including reports of its use in UEFI malware like BootKitty.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.35.0CPE matchmatch criteria
cpe:2.3:o:fujitsu:esprimo_d556\/2_firmware:*:*:*:*:*:*:*:*
< 1.31.0CPE matchmatch criteria
cpe:2.3:o:fujitsu:esprimo_d6011_firmware:*:*:*:*:*:*:*:*
< 3.08.0CPE matchmatch criteria
cpe:2.3:o:fujitsu:esprimo_d6012_firmware:*:*:*:*:*:*:*:*
< 1.64.0CPE matchmatch criteria
cpe:2.3:o:fujitsu:esprimo_d7010_firmware:*:*:*:*:*:*:*:*
< 1.64.0CPE matchmatch criteria
cpe:2.3:o:fujitsu:esprimo_d7010\/8_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 99th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

denopatch availablevia llm_extracted
View patch
keraspatch availablevia llm_extracted
View patch

Vendor Advisories (2)

denollm-deno-6f4688022d73b389HIGH

Certain HP PC BIOS Logo Vulnerabilities

Jun 28, 2024
kerasllm-keras-9df40d925e044e38HIGH

Certain HP PC BIOS Logo Vulnerabilities

Jun 28, 2024

References

binarly.io / posts/finding_logofail_the_dangers_of_image_parsing_during_system_boot/index.html
Exploit
security.netapp.com / advisory/ntap-20240105-0002
Third Party Advisory
insyde.com / security-pledge
Vendor Advisory
insyde.com / security-pledge/SA-2023053
Vendor Advisory
kb.cert.org / vuls/id/811862
Third Party Advisory