CVE-2020-10863
The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to trigger a shutdown via RPC from a Low Integrity process via TempShutDownMachine.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to trigger a shutdown via RPC from a Low Integrity process via TempShutDownMachine.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.08% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- avast/antivirus
- Source
- cve@mitre.org
EPSS 2.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://forum.avast.com/index.php?topic=232420.0Release Notes, Vendor Advisory
- https://forum.avast.com/index.php?topic=232423.0Release Notes, Vendor Advisory
- https://github.com/umarfarook882/Avast_Multiple_Vulnerability_Disclosure/blob/master/README.mdExploit, Third Party Advisory
- https://forum.avast.com/index.php?topic=232420.0Release Notes, Vendor Advisory
- https://forum.avast.com/index.php?topic=232423.0Release Notes, Vendor Advisory
- https://github.com/umarfarook882/Avast_Multiple_Vulnerability_Disclosure/blob/master/README.mdExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.