CVE-2019-16257

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 26% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
79.2%
KEV
Not listed

Published

September 12, 2019

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jun 9, 2026
No patch confirmed yet.
generic

Simjacker - Next Generation Spying via SIM Card Vulnerability | Enea

https://www.adaptivemobile.com/blog/simjacker-next-generation-spying-over-mobile

Data Freshness Timeline

(refreshed 8× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:25 UTCEPSS rescore
  2. 2026-07-06 16:25 UTCEPSS rescore
  3. 2026-07-06 02:20 UTCEPSS rescore
  4. 2026-07-05 02:27 UTCEPSS rescore
  5. 2026-07-04 06:28 UTCEPSS rescore
  6. 2026-07-01 15:03 UTCEPSS rescore
  7. 2026-07-01 15:03 UTCEPSS rescore
  8. 2026-06-30 23:20 UTCEPSS rescore
  9. 2026-06-29 14:03 UTCEPSS rescore
  10. 2026-06-28 14:04 UTCEPSS rescore
  11. 2026-06-28 04:54 UTCEPSS rescore
  12. 2026-06-28 04:54 UTCEPSS rescore
  13. 2026-06-27 03:06 UTCEPSS rescore
  14. 2026-06-25 13:47 UTCEPSS rescore
  15. 2026-06-25 13:47 UTCEPSS rescore
  16. 2026-06-24 14:03 UTCEPSS rescore
  17. 2026-06-24 14:03 UTCEPSS rescore
  18. 2026-06-23 21:31 UTCEPSS rescore
  19. 2026-06-23 21:30 UTCEPSS rescore
  20. 2026-06-22 14:23 UTCEPSS rescore
  21. 2026-06-22 14:23 UTCEPSS rescore
  22. 2026-06-21 14:54 UTCEPSS rescore
  23. 2026-06-21 14:54 UTCEPSS rescore
  24. 2026-06-21 01:57 UTCEPSS rescore
  25. 2026-06-21 01:57 UTCEPSS rescore
Show 40 more
  1. 2026-06-19 19:23 UTCEPSS rescore
  2. 2026-06-19 19:23 UTCEPSS rescore
  3. 2026-06-18 17:50 UTCEPSS rescore
  4. 2026-06-17 17:50 UTCEPSS rescore
  5. 2026-06-16 17:50 UTCEPSS rescore
  6. 2026-06-15 17:45 UTCEPSS rescore
  7. 2026-06-14 23:15 UTCEPSS rescore
  8. 2026-06-14 23:15 UTCEPSS rescore
  9. 2026-06-13 22:58 UTCEPSS rescore
  10. 2026-06-12 23:09 UTCEPSS rescore
  11. 2026-06-11 13:58 UTCEPSS rescore
  12. 2026-06-11 13:58 UTCEPSS rescore
  13. 2026-06-10 22:16 UTCEPSS rescore
  14. 2026-06-10 13:19 UTCEPSS rescore
  15. 2026-06-08 14:15 UTCEPSS rescore
  16. 2026-06-08 14:14 UTCEPSS rescore
  17. 2026-06-07 15:23 UTCEPSS rescore
  18. 2026-06-07 15:22 UTCEPSS rescore
  19. 2026-06-06 13:45 UTCEPSS rescore
  20. 2026-06-06 13:45 UTCEPSS rescore
  21. 2026-06-05 22:45 UTCEPSS rescore
  22. 2026-06-05 22:45 UTCEPSS rescore
  23. 2026-06-05 06:08 UTCEPSS rescore
  24. 2026-06-05 06:08 UTCEPSS rescore
  25. 2026-06-04 13:10 UTCEPSS rescore
  26. 2026-06-04 13:10 UTCEPSS rescore
  27. 2026-06-02 20:11 UTCEPSS rescore
  28. 2026-05-31 22:29 UTCEPSS rescore
  29. 2026-05-31 22:29 UTCEPSS rescore
  30. 2026-05-31 00:14 UTCEPSS rescore
  31. 2026-05-31 00:14 UTCEPSS rescore
  32. 2026-05-29 13:42 UTCEPSS rescore
  33. 2026-05-28 13:43 UTCEPSS rescore
  34. 2026-05-27 14:37 UTCEG score recompute
  35. 2026-05-27 14:37 UTCGHSA enrichment
  36. 2026-05-27 13:38 UTCEPSS rescore
  37. 2026-05-26 13:42 UTCEPSS rescore
  38. 2026-05-26 13:42 UTCEPSS rescore
  39. 2026-05-26 07:17 UTCEPSS rescore
  40. 2026-05-26 07:17 UTCEPSS rescore

Frequently asked(5)

What is CVE-2019-16257?
CVE-2019-16257 is a critical vulnerability published on September 12, 2019. 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.
When was CVE-2019-16257 disclosed?
CVE-2019-16257 was first published in the National Vulnerability Database on September 12, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-16257 actively exploited?
CVE-2019-16257 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-16257?
CVE-2019-16257 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-16257?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-16257, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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