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Exploited vulnerability · CISA KEV

Is CVE-2019-1069 exploited? Yes: in CISA KEV since 15 Mar 2022

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

Yes. CVE-2019-1069, Microsoft Task Scheduler Privilege Escalation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 15 Mar 2022, 1007 days after it was published. It is known to be used in ransomware campaigns. It affects Microsoft Task Scheduler. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 15 Mar 2022
ransomwareKnownused in campaigns
EPSStop 10%more likely than most to be exploited
severity7.8CVSS 3.1 · high
US federal due5 Apr 2022BOD 22-01 deadline

What it is

A privilege escalation vulnerability exists in the way the Task Scheduler Service validates certain file operations.

VendorMicrosoft (391 exploited CVEs in KEV)
ProductTask Scheduler
VulnerabilityMicrosoft Task Scheduler Privilege Escalation Vulnerability
WeaknessCWE-59
Published12 Jun 2019
Added to KEV15 Mar 2022
Reported by (CNA)microsoft

What to do

  1. Check whether you run it. Look for Task Scheduler 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 Jun 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

References

Questions

Is CVE-2019-1069 being exploited?

Yes. CISA added CVE-2019-1069 to the Known Exploited Vulnerabilities catalog on 15 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-1069 used in ransomware attacks?

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

How do I fix CVE-2019-1069?

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 Task Scheduler 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 March 2022 · Microsoft scorecard · act-now radar.

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