Improper initialization in UNISOC products - CVE-2025-31719

Vulnerability identifier: #VU118909

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-31719

CWE-ID: CWE-665

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local application to bypass implemented security restrictions. 

The vulnerability exists due to improper initialization in TEE EcDSA algorithm, which results in generation of incorrect signature results with low probability. A local application can bypass implemented security restrictions.

T618
T9300
T8300
S8000
T820
T770
T760
T765
T750
SC7731E
T610
T616
T612
T606
T310
SC9863A
SC9832E

Install updates from vendor's website.

• https://www.unisoc.com/en/support/announcement/1987692028719517698

• Improper initialization in TEE EcDSA algorithm implementation on Unisoc chipsets