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Exploited vulnerability · CISA KEV

Is CVE-2019-0752 exploited? Yes: in CISA KEV since 15 Feb 2022

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

Yes. CVE-2019-0752, Microsoft Internet Explorer Type Confusion Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 15 Feb 2022, 1043 days after it was published. It is known to be used in ransomware campaigns. It affects Microsoft Internet Explorer. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 15 Feb 2022
ransomwareKnownused in campaigns
EPSStop 1%among the most likely CVEs to be exploited
severity7.5CVSS 3.1 · high
US federal due15 Aug 2022BOD 22-01 deadline

What it is

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer

VendorMicrosoft (391 exploited CVEs in KEV)
ProductInternet Explorer
VulnerabilityMicrosoft Internet Explorer Type Confusion Vulnerability
WeaknessCWE-843
Published9 Apr 2019
Added to KEV15 Feb 2022
Reported by (CNA)microsoft

What to do

  1. Check whether you run it. Look for Internet Explorer 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 9 Apr 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in Internet Explorer

References

Questions

Is CVE-2019-0752 being exploited?

Yes. CISA added CVE-2019-0752 to the Known Exploited Vulnerabilities catalog on 15 Feb 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-0752 used in ransomware attacks?

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

How do I fix CVE-2019-0752?

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 Internet Explorer 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 February 2022 · Microsoft scorecard · act-now radar.

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