What’s Vulnerable › Vulnerabilities

CVE-2019-16241

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-11-26 · updated 2026-06-17
• Weakness: CWE-668

Description

On TCL Alcatel Cingular Flip 2 B9HUAH1 devices, PIN authentication can be bypassed by creating a special file within the /data/local/tmp/ directory. The System application that implements the lock screen checks for the existence of a specific file and disables PIN authentication if it exists. This file would typically be created via Android Debug Bridge (adb) over USB.

Affected products

• Alcatelmobile Cingular Flip 2 Firmware: b9huah1

References

• https://www.nccgroup.trust/uk/our-research/?research=Technical+advisories
• https://www.nccgroup.trust/us/our-research/technical-advisory-multiple-vulnerabilities-in-alcatel-flip-2/#C
• https://www.nccgroup.trust/uk/our-research/?research=Technical+advisories
• https://www.nccgroup.trust/us/our-research/technical-advisory-multiple-vulnerabilities-in-alcatel-flip-2/#C

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