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PatchSiren cyber security CVE debrief

CVE-2019-1388 Microsoft CVE debrief

CVE-2019-1388 is a Microsoft Windows privilege escalation issue associated with the Windows Certificate Dialog. CISA included it in the Known Exploited Vulnerabilities catalog, which means it has been observed being actively exploited in the wild. The KEV metadata also marks it as having known ransomware campaign use, so defenders should treat it as a high-priority remediation item and follow vendor guidance promptly.

Vendor
Microsoft
Product
Windows
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2023-04-07
Original CVE updated
2023-04-07
Advisory published
2023-04-07
Advisory updated
2023-04-07

Who should care

Windows administrators, endpoint security teams, patch management owners, and incident responders should prioritize this CVE because it is listed in CISA KEV and marked as having known ransomware campaign use.

Technical summary

The supplied corpus identifies the flaw as a Microsoft Windows Certificate Dialog privilege escalation vulnerability. Beyond that classification, the source set does not provide additional technical specifics such as affected versions, attack path, or exploit mechanics. The authoritative signal here is its inclusion in CISA KEV and the remediation guidance to apply updates per vendor instructions.

Defensive priority

High. CISA KEV listing plus known ransomware campaign use indicates active exploitation risk and makes timely patching or mitigation urgent.

Recommended defensive actions

  • Apply Microsoft updates per vendor instructions as soon as possible.
  • Track remediation against the CISA KEV due date of 2023-04-28.
  • Prioritize exposed Windows systems and endpoints used by privileged users.
  • Verify patch deployment and confirm the CVE is removed from your exposure inventory.
  • Review Microsoft advisory and NVD details for any environment-specific guidance.

Evidence notes

Evidence is limited to the supplied corpus and official links. CISA KEV metadata identifies the vulnerability as 'Microsoft Windows Certificate Dialog Privilege Escalation Vulnerability,' marks it as known exploited, sets dateAdded to 2023-04-07 and dueDate to 2023-04-28, and notes 'known ransomware campaign use' plus 'Apply updates per vendor instructions.' The source metadata also points to the Microsoft advisory and the NVD record.

Official resources

Publicly listed by CISA in the Known Exploited Vulnerabilities catalog on 2023-04-07; KEV metadata marks known ransomware campaign use and recommends applying vendor updates.