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Exploited vulnerability · CISA KEV

Is CVE-2023-36874 exploited? Yes: in CISA KEV since 11 Jul 2023

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

Yes. CVE-2023-36874, Microsoft Windows Error Reporting Service Privilege Escalation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 11 Jul 2023, the day it was published. It affects Microsoft Windows. If you run it, CISA's required action is: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

exploitedYesCISA KEV · 11 Jul 2023
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity7.8CVSS 3.1 · high
US federal due1 Aug 2023BOD 22-01 deadline

What it is

Microsoft Windows Error Reporting Service contains an unspecified vulnerability that allows for privilege escalation.

VendorMicrosoft (391 exploited CVEs in KEV)
ProductWindows
VulnerabilityMicrosoft Windows Error Reporting Service Privilege Escalation Vulnerability
WeaknessCWE-59
Published11 Jul 2023
Added to KEV11 Jul 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 or discontinue use of the product if updates are unavailable.
  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 11 Jul 2023.
  4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in Windows

References

Questions

Is CVE-2023-36874 being exploited?

Yes. CISA added CVE-2023-36874 to the Known Exploited Vulnerabilities catalog on 11 Jul 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2023-36874 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2023-36874?

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. 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 July 2023 · Microsoft scorecard · act-now radar.

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