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KEV Entry

CVE-2026-20316

Known Exploited Vulnerability Entry ENISA

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Entry Details
Confirmed Exploited

CVE-2026-20316

2026-09-09 00:00 UTC

Timestamps

2026-09-09

2026-09-09

Scope

Affected: Cisco / Cisco Secure Firewall Management Center (FMC) | Description: Vulnerability in the web interface could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. EU victimology was confirmed. Comprehensive hardening scheduled (Week of September 14th). | Patched since: 2026/08/05 | Exploitation type: ransomware | CWEs: CWE-259 | Origin source: ENISA | Notes: https://blog.talosintelligence.com/fmc-ongoing-exploitation/

References
  • {'id': 'CVE-2026-20316', 'url': 'https://www.cve.org/CVERecord?id=CVE-2026-20316'}
  • {'id': 'EUVD-2026-50404', 'url': 'https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-50404'}
  • {'id': 'source', 'url': 'https://blog.talosintelligence.com/fmc-ongoing-exploitation/'}

dca9f939-2747-41b7-a5fe-2294f7b2fb1f

ENISA
cce329bf-df49-4c6e-a027-80be2e6483bd

2026-09-10 17:00 UTC

2026-09-10 17:00 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
csirt_report enisa-cnw-kev confirmed_compromise 0.75
View details 
{
  "catalog": "ENISA / EU CSIRTs Network (CNW) KEV JSON",
  "cwes": [
    "CWE-259"
  ],
  "dateReported": "2026/09/09",
  "euvd": "EUVD-2026-50404",
  "exploitationType": [
    "ransomware"
  ],
  "notes": "https://blog.talosintelligence.com/fmc-ongoing-exploitation/",
  "originSource": "ENISA",
  "patchedSince": "2026/08/05",
  "product": "Cisco Secure Firewall Management Center (FMC)",
  "threatActorsExploiting": [],
  "vendorProject": "Cisco",
  "vulnerabilityName": ""
}
 -
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