CVE-2023-21627
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 · uneditedMemory corruption in Trusted Execution Environment while calling service API with invalid address.
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 · moderate confidenceMemory corruption vulnerability in the Trusted Execution Environment (TEE) that occurs when calling a service API with an invalid memory address. This could allow an attacker to corrupt memory within the secure TEE boundary, potentially leading to arbitrary code execution or privilege escalation within the trusted environment.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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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Identify the Qualcomm firmware variantCheck the device hardware specifications or firmware information to determine if the device uses one of the affected Qualcomm firmware components: Aqt1000, Qca6390, Qca6391, Qca6420, Qca6426, Qca6430, Qca6436, or Qca6574au.Affected if The device runs any of the listed firmware variants.
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Confirm TEE is enabledInspect the system configuration or boot logs to determine if the Trusted Execution Environment (TEE) is active on the device. This may involve checking for TEE-related kernel modules, secure boot status, or TEE driver presence.Affected if TEE is enabled and running on the device.
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Check TEE service API accessibilityDetermine whether applications or services can invoke TEE service APIs. Review the device's software stack to see if any component makes calls to TEE internal services.Affected if Any application or service has the ability to call TEE service APIs.
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Review TEE memory handling configurationExamine the TEE configuration or security policy to determine if input validation is enforced when passing memory addresses to TEE service APIs.Affected if Memory address validation is not enforced or can be bypassed when calling TEE APIs.
A user is affected if the device uses any of the listed Qualcomm firmware variants, has TEE enabled, and exposes TEE service APIs that accept memory addresses without proper validation.
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 vendor-provided security updates for the TEE component. Ensure proper input validation is enforced when passing addresses to TEE service APIs. If no patch is available, consider disabling affected TEE services until a fix can be deployed.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-21627 — 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-2023-21627 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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