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CVE-2018-3891

Status: ModifiedMedium (4.6)—

An exploitable firmware downgrade vulnerability exists in the firmware update functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted file can cause a logic flaw, resulting in a firmware downgrade. An attacker can insert an SD card to trigger this vulnerability.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Yitechnology — YI Home Camera Firmware

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-3891",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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        "acInsufInfo": false,
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  "published": "2018-11-02T17:29:00.287",
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      "tags": [
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      "source": "talos-cna@cisco.com"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "lang": "en",
      "value": "An exploitable firmware downgrade vulnerability exists in the firmware update functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted file can cause a logic flaw, resulting in a firmware downgrade. An attacker can insert an SD card to trigger this vulnerability."
    },
    {
      "lang": "es",
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    }
  ],
  "lastModified": "2026-06-17T01:57:58.273",
  "configurations": [
    {
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  "sourceIdentifier": "talos-cna@cisco.com"
}