Some Samsung devices include the SIMalliance Toolbox Browser (aka S@T Browser) on the…
Priority CRITICAL 100Exploited in the wildPublished · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
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.
Why it matters now
Exploitation Active In CISA KEV since 2021-11-03CISA due date 2022-05-03
EPSS 0.04949 92nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:trustedconnectivityalliance:s\@t_browser:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Trustedconnectivityalliance |
- cpe:2.3:a:trustedconnectivityalliance:s\@t_browser:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Trustedconnectivityalliance
Remediation
No fixed version listed by the sources yet.
Timeline
- 2021-11-03 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2019-16256
- 2026-10-03 Alias added: GHSA-mq4h-3x66-jfc7
Sources
- CVE-2019-16256 · CVE Program
- CVE-2019-16256 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-mq4h-3x66-jfc7 · GitHub Advisory Database · CC BY 4.0
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