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Vybrid Mvf30nn151cku26 FirmwareOperating system · Nxp

CVE-2017-7932

MEDIUM · 6.0 CVSS v3.0 Published 2017-08-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
65/100
Remediation priority · Elevated
No privileges Zero-click

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 · unedited
An improper certificate validation issue was discovered in NXP i.MX 28 i.MX 50, i.MX 53, i.MX 7Solo i.MX 7Dual Vybrid VF3xx, Vybrid VF5xx, Vybrid VF6xx, i.MX 6ULL, i.MX 6UltraLite, i.MX 6SoloLite, i.MX 6Solo, i.MX 6DualLite, i.MX 6SoloX, i.MX 6Dual, i.MX 6Quad, i.MX 6DualPlus, and i.MX 6QuadPlus. When the device is configured in security enabled configuration, under certain conditions it is possible to bypass the signature verification by using a specially crafted certificate leading to the execution of an unsigned image.

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 confidence

The vulnerability exists in NXP i.MX and Vybrid processor secure boot implementation where certificate validation can be bypassed using specially crafted certificates, allowing execution of unsigned code when the device is in security-enabled configuration.

MitigationApply NXP-provided firmware/bootloader patches to address the certificate validation flaw and review secure boot configuration to ensure proper signature verification is enforced.

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
Vybrid Mvf30nn151cku26 FirmwareOperating system
Affected:all versions
Vybrid Mvf30ns151cku26 FirmwareOperating system
Affected:all versions
Vybrid Mvf50nn151cmk40 FirmwareOperating system
Affected:all versions
Vybrid Mvf50nn151cmk50 FirmwareOperating system
Affected:all versions
Vybrid Mvf50ns151cmk40 FirmwareOperating system
Affected:all versions
Vybrid Mvf50ns151cmk50 FirmwareOperating system
Affected:all versions
Vybrid Mvf51nn151cmk50 FirmwareOperating system
Affected:all versions
Vybrid Mvf51ns151cmk50 FirmwareOperating system
Affected:all versions

CVSS 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
Physical
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
High

CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the processor model
    Locate and read the part number marking on the NXP processor chip. Verify it matches any of the affected models: MVF30nn/MVF30ns, MVF50nn/MVF50ns, or MVF51nn/MVF51ns series variants (including suffixes like 151cku26, 151cmk40, 151cmk50).
    Affected if The processor model number matches any of the Vybrid variants listed in the affected products.
  2. Confirm secure boot is enabled
    Check the secure boot configuration setting in the device. This is typically controlled by a one-time programmable (OTP) fuse or boot configuration register. On Vybrid devices, examine the SEC_CONFIG fuse bits or BOOT_CFG pins to determine if secure boot mode is active.
    Affected if Secure boot is enabled (security-enabled configuration) on a vulnerable processor model.
  3. Check firmware version
    Read the currently programmed firmware version from the device. On Vybrid processors, this can be queried via debug interfaces (JTAG/SWD), boot ROM serial boot mode, or by reading firmware identification registers if accessible through boot loader diagnostics.
    Affected if The device runs any firmware version on an affected Vybrid model with secure boot enabled (all versions are affected).
  4. Verify certificate validation behavior
    If you have access to the secure boot chain, examine the certificate validation logic or attempt to test with a test certificate to observe whether signature verification is properly enforced. Review boot logs or debug output for certificate validation pass/fail messages.
    Affected if Certificate validation can be bypassed or fails to properly verify signatures on the affected device configuration.

You are affected if your device uses any of the listed NXP Vybrid processor models (MVF30, MVF50, MVF51 series) with secure boot enabled, as all firmware versions of these models contain the certificate validation bypass vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply NXP-provided firmware/bootloader patches to address the certificate validation flaw and review secure boot configuration to ensure proper signature verification is enforced.

Fix this in Vybrid Mvf30nn151cku26 Firmware Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing5.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,790
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2017-7932 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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