KEV Entry

CVE-2026-7273

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2026-7273

2026-09-21 13:20 UTC

Timestamps

2026-09-21

2026-09-21

Scope

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a... | Affected: Zyxel / GS1900-48HPv2 firmware, GS1900-8 firmware, GS1900-8HP firmware, GS1900-10HP firmware, GS1900-16 firmware, GS1900-24 firmware, GS1900-24E firmware, GS1900-24EP firmware, GS1900-24HPv2 firmware, GS1900-48 firmware | CVSS: 8.8 (HIGH) | EPSS: 0.00315 | Used in malware: unknown | Listed 6 hours ahead of CISA KEV | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2026-7273', 'url': 'https://www.cve.org/CVERecord?id=CVE-2026-7273'}
  • {'id': 'GHSA-RRV4-8JQ5-8J78', 'url': 'https://github.com/advisories/GHSA-RRV4-8JQ5-8J78'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2026-7273'}

b546434a-0753-48e2-badc-a226bf896e67

Previdian
caeb2787-0d58-4236-9039-7c86c3e566f3

2026-09-22 14:00 UTC

2026-09-22 14:00 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian successful_exploitation 0.70
View details 
{
  "added_date": "2026-09-21T13:20:00.000Z",
  "ahead_of_cisa_kev": {
    "count": 6,
    "unit": "hour"
  },
  "cve_id": "CVE-2026-7273",
  "cvss_estimated": false,
  "cvss_score": 8.8,
  "cvss_severity": "HIGH",
  "epss_percentile": 0.24603,
  "epss_score": 0.00315,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": "GHSA-RRV4-8JQ5-8J78",
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "GS1900-48HPv2 firmware, GS1900-8 firmware, GS1900-8HP firmware, GS1900-10HP firmware, GS1900-16 firmware, GS1900-24 firmware, GS1900-24E firmware, GS1900-24EP firmware, GS1900-24HPv2 firmware, GS1900-48 firmware",
  "title": "A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through\u00a02.90(ABTQ.1)C0 could allow a...",
  "used_in_malware": "unknown",
  "vendor": "Zyxel",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2026-7273"
}
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