CVE-2020-10867Public exploit

Unauthorized task access via permissive RPC endpoint

Published Apr 1, 2020 · Updated Aug 4, 2024

Authorization bypass in Avast Antivirus before 20 allows local users to access protected tasks through an untrusted process. The aswTask RPC endpoint in the TaskEx library of AvastSvc.exe accepts task operations without enforcing the intended caller restrictions. Self Defense must be enabled; public records do not identify the reachable tasks or resulting actions, so the consequence is limited to unauthorized task access.

CVSS severity9.8
Critical
EPSS probability2.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Avast Antivirus before 20 allows local users to access protected tasks through an untrusted process. The aswTask RPC endpoint in the TaskEx library of AvastSvc.exe accepts task operations without enforcing the intended caller restrictions. Self Defense must be enabled; public records do not identify the reachable tasks or resulting actions, so the consequence is limited to unauthorized task access.

The record

CVE
CVE-2020-10867
Published
Apr 1, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-668
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 1, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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