KEV Entry

CVE-2021-23758

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2021-23758

2026-08-26 19:00 CEST

Timestamps

2026-08-26

2026-08-26

Scope

Deserialization of Untrusted Data | Affected: Michaelschwarz / AjaxPro.2 | CVSS: 8.1 (HIGH) | EPSS: 0.82578 | Used in malware: unknown | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-23758', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-23758'}
  • {'id': 'GHSA-6R7C-6W96-8PVW', 'url': 'https://github.com/advisories/GHSA-6R7C-6W96-8PVW'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2021-23758'}

ccd640b6-d78b-4f0a-a25b-84c8fa8d8e3f

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": "2026-08-26T17:00:09.897Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2021-23758",
  "cvss_estimated": false,
  "cvss_score": 8.1,
  "cvss_severity": "HIGH",
  "epss_percentile": 0.99657,
  "epss_score": 0.82578,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": "GHSA-6R7C-6W96-8PVW",
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "AjaxPro.2",
  "title": "Deserialization of Untrusted Data",
  "used_in_malware": "unknown",
  "vendor": "Michaelschwarz",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2021-23758"
}
 -
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