eMMC data disclosure via cleartext TPM bus capture
Published Feb 5, 2026 · Updated Feb 5, 2026
Cleartext transmission in TPM-backed LUKS on Moxa UC-1200A Series 1.0 through 1.4 allows physically proximate attackers to read eMMC data. The discrete TPM sends disk-unlock material over an exposed SPI bus, allowing attached capture equipment to record it for offline LUKS decryption. Exploitation requires opening and possessing the device for extended signal capture and analysis; remote access cannot reach the flaw.
Summary
What happened
Cleartext transmission in TPM-backed LUKS on Moxa UC-1200A Series 1.0 through 1.4 allows physically proximate attackers to read eMMC data. The discrete TPM sends disk-unlock material over an exposed SPI bus, allowing attached capture equipment to record it for offline LUKS decryption. Exploitation requires opening and possessing the device for extended signal capture and analysis; remote access cannot reach the flaw.
The record
- CVE
- CVE-2026-0714
- Published
- Feb 5, 2026
- Updated
- Feb 5, 2026
- Vendor
- Moxa
- Product
- UC-1200A Series
- Classifications
- CWE-319, CAPEC-401, T1200
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 5, 2026CVE publishedPublication date reported by the CVE source.
- Feb 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0 <=1.4
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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