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Exploited vulnerability · CISA KEV

Is CVE-2019-1388 exploited? Yes: in CISA KEV since 7 Apr 2023

Gociux · Microsoft Windows · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-1388, Microsoft Windows Certificate Dialog Privilege Escalation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 7 Apr 2023, 1242 days after it was published. It is known to be used in ransomware campaigns. It affects Microsoft Windows. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 7 Apr 2023
ransomwareKnownused in campaigns
EPSStop 5%very likely to be exploited
severity7.8CVSS 3.1 · high
US federal due28 Apr 2023BOD 22-01 deadline

What it is

Microsoft Windows Certificate Dialog contains a privilege escalation vulnerability, allowing attackers to run processes in an elevated context.

VendorMicrosoft (391 exploited CVEs in KEV)
ProductWindows
VulnerabilityMicrosoft Windows Certificate Dialog Privilege Escalation Vulnerability
WeaknessCWE-269
Published12 Nov 2019
Added to KEV7 Apr 2023
Reported by (CNA)microsoft

What to do

  1. Check whether you run it. Look for Windows in your asset inventory, including appliances and cloud images. Stack check lists every exploited Microsoft CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 12 Nov 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in Windows

References

Questions

Is CVE-2019-1388 being exploited?

Yes. CISA added CVE-2019-1388 to the Known Exploited Vulnerabilities catalog on 7 Apr 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-1388 used in ransomware attacks?

Yes, CISA lists it as known to be used in ransomware campaigns.

How do I fix CVE-2019-1388?

Apply updates per vendor instructions. Check Microsoft's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Windows and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in April 2023 · Microsoft scorecard · act-now radar.

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