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CVE-2020-10867

30
FAUCET Score

CVE-2020-10867 describes a critical vulnerability in Avast Antivirus versions prior to 20, specifically affecting the Avast Service (AvastSvc.exe) on Windows. This flaw allows an attacker to bypass intended access restrictions on tasks via the aswTask RPC endpoint, even when Avast's Self Defense feature is active. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with low complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the high severity warrants immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 20.0CPE matchmatch criteria
cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.16%
Probability of exploitation in next 30 days
EPSS Percentile
80.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0216 is in the 69th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

forum.avast.com / index.php
Release NotesVendor Advisory
forum.avast.com / index.php
Release NotesVendor Advisory
github.com / umarfarook882/Avast_Multiple_Vulnerability_Disclosure/blob/master/README.md
ExploitThird Party Advisory