CVE-2023-31041
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn issue was discovered in SysPasswordDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. System password information could optionally be stored in cleartext, which might lead to possible information disclosure.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA vulnerability in the SysPasswordDxe component of Insyde InsydeH2O UEFI firmware (kernel versions 5.0-5.5) allows system passwords to be stored in cleartext rather than being properly hashed or encrypted, enabling credential disclosure.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 5.0= 5.1= 5.2= 5.3= 5.4= 5.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Retrieve UEFI firmware versionOn Windows, run 'wmic bios get smbiosbiosversion' or open 'msinfo32' and look for BIOS Version. On Linux, run 'dmidecode -s bios-version' or check 'cat /sys/class/dmi/id/bios_version'. On macOS, run 'system_profiler SPHardwareDataType | grep BIOS'.Affected if The reported BIOS/firmware version string contains 'InsydeH2O' or indicates Insyde firmware and matches versions 5.0, 5.1, 5.2, 5.3, 5.4, or 5.5
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Confirm InsydeH2O firmware vendorReview the system BIOS/UEFI information output to confirm the firmware was developed by Insyde. Look for vendor strings such as 'Insyde', 'InsydeH2O', or Insyde-specific branding in the BIOS details.Affected if The firmware is confirmed to be Insyde InsydeH2O and the version falls within the 5.0-5.5 range
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Check for system password configurationAccess UEFI/BIOS settings (typically via F2, F12, or Del during boot) and navigate to the Security or Password section to determine if a system or supervisor password is configured.Affected if A system or supervisor password is set while running vulnerable InsydeH2O firmware versions 5.0-5.5, as cleartext storage only becomes a concern when passwords exist
A system is affected if it runs Insyde InsydeH2O UEFI firmware with kernel versions 5.0 through 5.5 and has a system or supervisor password configured.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply firmware updates from Insyde or the system OEM that address this vulnerability; verify that password storage configuration uses secure encryption rather than cleartext storage.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-31041 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-31041 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data