CVE-2021-45338
HIGH
7.8
CVSS Score
Published: December 27, 2021 at 12:53 PM UTC
Updated: June 17, 2026 at 04:13 AM UTC
1 product affected across 1 vendorAntivirus
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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%
Description
Multiple privilege escalation vulnerabilities in Avast Antivirus prior to 20.4 allow a local user to gain elevated privileges by calling unnecessarily powerful internal methods of the main antivirus service which could lead to the (1) arbitrary file delete, (2) write and (3) reset security.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (4)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST1.1x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST1.2x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST1.3x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-Other
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