KEV Entry

CVE-2026-34621

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2026-34621

2026-06-01 15:07 CEST

Timestamps

2026-06-01

2026-06-01

Scope

Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321) | Affected: Adobe / Acrobat DC, Acrobat Reader DC, Acrobat 2024 | CVSS: 8.6 (HIGH) | EPSS: 0.02183 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2026-34621', 'url': 'https://www.cve.org/CVERecord?id=CVE-2026-34621'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2026-34621'}

bdd8dff7-7701-440d-9c2b-ca30a90b5b74

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

2026-10-02 09:09 CEST

2026-10-02 09:09 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian successful_exploitation 0.70
View details 
{
  "added_date": "2026-06-01T13:07:13.584Z",
  "ahead_of_cisa_kev": {
    "count": 1,
    "unit": "day"
  },
  "cve_id": "CVE-2026-34621",
  "cvss_estimated": false,
  "cvss_score": 8.6,
  "cvss_severity": "HIGH",
  "epss_percentile": 0.81719,
  "epss_score": 0.02183,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "Acrobat DC, Acrobat Reader DC, Acrobat 2024",
  "title": "Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027) (CWE-1321)",
  "used_in_malware": "unknown",
  "vendor": "Adobe",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2026-34621"
}
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