Medium severity · published Jun 29, 2020
CVE-2020-13657
An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links
5.5
CVSS
0.4%
EPSS
No
On KEV
Description
An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard links. The vulnerability allows local users to take control of arbitrary files.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Avg Antivirus · Avast
before 20.4 · source: NVD
FA
Free Antivirus · Avast
before 20.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13657
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-13657
Release Notes
https://forum.avast.com/index.php?topic=232423.0
Vendor Advisory
https://forum.avast.com/index.php?topic=234638.0
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