KEV Entry

CVE-2021-20090

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-20090

2021-11-03 00:00 UTC

Timestamps

2021-11-03

2021-11-03

Scope

KEVIntel entry: A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <=... | Affected: Buffalo / Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3 | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-20090', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-20090'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2021-20090'}

c128a2d2-1ecf-4e17-9688-86c345f9d8af

caeb2787-0d58-4236-9039-7c86c3e566f3

2026-06-19 12:47 UTC

2026-06-19 12:47 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel successful_exploitation 0.70
View details 
{
  "added_date": "2021-11-03T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cvss_score": 9.8,
  "cvss_severity": "CRITICAL",
  "epss_percentile": null,
  "epss_score": null,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": false,
  "product": "Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3",
  "title": "A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware version \u003c=...",
  "used_in_malware": "unknown",
  "vendor": "Buffalo"
}
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