November 13, 2026 Follow Egret
CVE-2019-16256 · CVE record: PUBLISHED

SIMalliance Toolbox Browser Command Injection Vulnerability

n/a n/a

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.

Exploitation evidence

Known exploited · CISA KEV listed

Added 2021-11-03. Ransomware campaign use: Unknown.

CISA required action: Apply updates per vendor instructions.

CISA due date: 2022-05-03. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

n/a / n/a

Default status: Not specified

  • affected: n/a

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.04949,
  "percentile": 0.92281
}
10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.04949,
  "percentile": 0.92234
}
09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.04949,
  "percentile": 0.92224
}
08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.04949,
  "percentile": 0.9222
}
07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.04949,
  "percentile": 0.92214
}
06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.04949,
  "percentile": 0.92201
}
06 Nov 2026, 12:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

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            "url": "https://www.adaptivemobile.com/blog/simjacker-next-generation-spying-over-mobile"
          }
        ],
        "title": "CVE Program Container"
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      {
        "metrics": [
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              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
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            "other": {
              "content": {
                "id": "CVE-2019-16256",
                "options": [
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                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-04T20:06:45.643491Z",
                "version": "2.0.3"
              },
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          },
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        "references": [
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            "tags": [
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            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16256"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2021-11-03T00:00:00.000Z",
            "value": "CVE-2019-16256 added to CISA KEV"
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        ],
        "title": "CISA ADP Vulnrichment"
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    "cna": {
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          "lang": "en",
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      "x_legacyV4Record": {
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        "affects": {
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                  "product_data": [
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                            "version_value": "n/a"
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                "vendor_name": "n/a"
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            }
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  "cveMetadata": {
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    "datePublished": "2019-09-12T12:56:18.000Z",
    "dateReserved": "2019-09-12T00:00:00.000Z",
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    "state": "PUBLISHED"
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05 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.04949,
  "percentile": 0.92194
}
04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.04949,
  "percentile": 0.92189
}
03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.04949,
  "percentile": 0.92175
}
03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.04949,
  "percentile": 0.92165
}
03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2019-16256",
  "cwes": [],
  "dateAdded": "2021-11-03",
  "dueDate": "2022-05-03",
  "forensicTriage": "No",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://nvd.nist.gov/vuln/detail/CVE-2019-16256",
  "product": "Toolbox Browser",
  "requiredAction": "Apply updates per vendor instructions.",
  "shortDescription": "SIMalliance Toolbox Browser contains an command injection vulnerability that could allow remote attackers to retrieve location and IMEI information or execute a range of other attacks by modifying the attack message.",
  "vendorProject": "SIMalliance",
  "vulnerabilityName": "SIMalliance Toolbox Browser Command Injection Vulnerability"
}
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