KEV Entry

CVE-2018-10657

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2018-10657

2018-05-02 18:00 CEST

Timestamps

2018-05-02

2018-05-02

Scope

Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable,... | Affected: Matrix / Synapse | CVSS: 7.5 (HIGH) | EPSS: 0.01522 | Used in malware: unknown | Not yet in CISA KEV: True

References
  • {'id': 'CVE-2018-10657', 'url': 'https://www.cve.org/CVERecord?id=CVE-2018-10657'}
  • {'id': 'GHSA-VMCC-4P4X-X7WG', 'url': 'https://github.com/advisories/GHSA-VMCC-4P4X-X7WG'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2018-10657'}

bc8da5fa-114e-46cf-83e2-f54af66e02a2

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

2026-10-02 09:10 CEST

2026-10-02 09:10 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian successful_exploitation 0.70
View details 
{
  "added_date": "2018-05-02T16:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2018-10657",
  "cvss_estimated": false,
  "cvss_score": 7.5,
  "cvss_severity": "HIGH",
  "epss_percentile": 0.73686,
  "epss_score": 0.01522,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": "GHSA-VMCC-4P4X-X7WG",
  "not_yet_in_cisa_kev": true,
  "previous_ids": [],
  "product": "Synapse",
  "title": "Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable,...",
  "used_in_malware": "unknown",
  "vendor": "Matrix",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2018-10657"
}
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