CVE-2019-17093
mediumpriority · track · 31EPSS 0.006 · 46 %ileEUUSEPSS · scored 2026-10-27
An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8. A DLL Preloading vulnerability allows an attacker to implant %WINDIR%\system32\wbemcomn.dll, which is loaded into a protected-light process (PPL) and might bypass some of the self-defense mechanisms. This affects all components that use WMI, e.g., AVGSvc.exe 19.6.4546.0 and TuneupSmartScan.dll 19.1.884.0.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.4–7.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
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references (9)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2019-17093cnnvd
- https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abusescnnvd
- https://safebreach.com/blogcnnvd
- https://vigilance.fr/vulnerability/Avast-Antivirus-executing-DLL-code-via-Protected-Process-Light-30705cnnvd
- https://www.avast.comPatchcnnvd
- https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-Abusesenisa_euvd
- https://safebreach.com/blogenisa_euvd
- https://safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-Potential-AbusesExploitTechnical DescriptionThird Party Advisorynvd
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