CVE-2021-45339 — Incorrect Authorization in Antivirus

CWE-863 — Incorrect AuthorizationCWE-269 — Improper Privilege Management3 documents3 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 90.25%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Avast Antivirus
Timeline
PublishedDec 27
Latest updateDec 28

Description

Privilege escalation vulnerability in Avast Antivirus prior to 20.4 allows a local user to gain elevated privileges by "hollowing" trusted process which could lead to the bypassing of Avast self-defense.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages1 packages

▶NVDavast/antivirus< 20.4

🔴Vulnerability Details

2
GHSA
GHSA-4j2p-j8c6-h5p8: Privilege escalation vulnerability in Avast Antivirus prior to 20↗2021-12-28
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CVEList
CVE-2021-45339: Privilege escalation vulnerability in Avast Antivirus prior to 20↗2021-12-27
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CVE-2021-45339 — Incorrect Authorization in Avast | cvebase