CVE DATABASE / CVE-2019-16256
CVE-2019-16256
SIMalliance Toolbox Browser Command Injection Vulnerability
CVSS 9.8 · CRITICAL
⚠ CISA KEV — ACTIVELY EXPLOITED
On the CISA KEV catalog
Confirmed exploited in the wild. Added 2021-11-03.
Federal remediation due 2022-05-03.
Required action: Apply updates per vendor instructions.
Summary
Some Samsung 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.
CVSS 3.1 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Affected products
Trustedconnectivityalliance s\@t browser
Check this CVE live
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References
- https://www.adaptivemobile.com/blog/simjacker-next-generation-spying-over-mobile
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16256
Data: NIST NVD + CISA KEV. NVD last modified 2025-11-12. Always verify against the vendor advisory before acting.