Is CVE-2019-16257 actively exploited?

No active exploitation of CVE-2019-16257 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-16257 be exploited remotely?

Yes. CVE-2019-16257 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-16257?

CVE-2019-16257 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2019-16257

CRITICAL

CVE-2019-16257

NVD-CWE-noinfoPublished: September 12, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Some Motorola devices include the SIMalliance Toolbox Browser (aka S@T Browser) on the UICC, which might allow remote attackers to retrieve location and IMEI information, or retrieve other data or execute certain commands, via SIM Toolkit (STK) instructions in an SMS message, aka Simjacker.

NVD Source

Technical Analysis

CVE-2019-16257 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.