Incorrect ECDSA signatures via memory inconsistency
Published Nov 11, 2025 · Updated Nov 11, 2025
Improper initialization in the TEE ECDSA implementation on Unisoc chipsets allows local users to generate incorrect signatures. A memory-consistency defect in the TEE ECDSA algorithm produces an incorrect signature result with low probability; the exact memory operation and state are undisclosed. Exploitation requires local execution but no prior privileges or user interaction, and the documented consequence is sporadic incorrect signature generation.
Summary
What happened
Improper initialization in the TEE ECDSA implementation on Unisoc chipsets allows local users to generate incorrect signatures. A memory-consistency defect in the TEE ECDSA algorithm produces an incorrect signature result with low probability; the exact memory operation and state are undisclosed. Exploitation requires local execution but no prior privileges or user interaction, and the documented consequence is sporadic incorrect signature generation.
The record
- CVE
- CVE-2025-31719
- Published
- Nov 11, 2025
- Updated
- Nov 11, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-665
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 11, 2025CVE publishedPublication date reported by the CVE source.
- Nov 11, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
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Technologies
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