Vulnerability in Avast Antivirus
CVE-2019-17093
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- safebreach.com/blog (Third Party Advisory)
- safebreach.com/Post/Avast-Antivirus-AVG-Antivirus-DLL-Preloading-into-PPL-and-P… (Technical Description, Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-17093?
- CVE-2019-17093 is a high-severity vulnerability in Avast Antivirus, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2019-10-23.
- How severe is CVE-2019-17093?
- High severity. CVSS v3 base score is 7.8 out of 10.