KEV Entry

CVE-2021-22555

Known Exploited Vulnerability Entry KEVIntel

Back to Catalog View Vulnerability
Entry Details
Confirmed Exploited

CVE-2021-22555

2026-06-01 10:41 UTC

Timestamps

2026-06-01

2026-06-01

Scope

KEVIntel entry: Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE | Affected: Linux / Linux Kernel | CVSS: 8.3 (HIGH) | EPSS: 0.78684 | Used in malware: unknown | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-22555', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-22555'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/CVE-2021-22555'}

838f9894-2394-4cdb-adc5-3bd8b555ff5d

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

2026-06-23 14:03 UTC

2026-07-10 06:14 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel successful_exploitation 0.70
View details 
{
  "added_date": "2026-06-01T10:41:42.825Z",
  "ahead_of_cisa_kev": {
    "count": 1,
    "unit": "day"
  },
  "cvss_score": 8.3,
  "cvss_severity": "HIGH",
  "epss_percentile": 0.99537,
  "epss_score": 0.78684,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": false,
  "product": "Linux Kernel",
  "title": "Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE",
  "used_in_malware": "unknown",
  "vendor": "Linux"
}
 -
Export Options
JSON Object JSON API View Full Catalog