CVE-2021-28799

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2021-28799

Confirmed

Yes

2022-03-31 00:00 UTC

Timestamps

2022-03-31

2022-03-31

Scope

KEV entry: QNAP NAS Improper Authorization Vulnerability | Affected: QNAP / Network Attached Storage (NAS) | Description: QNAP NAS running HBS 3 contains an improper authorization vulnerability which can allow remote attackers to log in to a device. | Required action: Apply updates per vendor instructions. | Due date: 2022-04-21 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-28799

References
  • {'id': 'CVE-2021-28799', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-28799'}

334d27dc-c265-46df-93c4-62cae5eb5122

405284c2-e461-4670-8979-7fd2c9755a60

2026-02-02 12:27 UTC

2026-02-02 12:27 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-285"
  ],
  "date_added": "2022-03-31",
  "due_date": "2022-04-21",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Known",
  "product": "Network Attached Storage (NAS)",
  "vendorProject": "QNAP",
  "vulnerabilityName": "QNAP NAS Improper Authorization Vulnerability"
}
 -
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