CVE-2020-13657 json
An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus Free before 20.4 due to improperly handling hard l…
published 2020-06-29 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-5898
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- avast avg_antivirus 20.4
- avast free_antivirus 20.4
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N |
References
-
forum.avast.com
/index.php?topic=234638.0
vendor-advisory
-
forum.avast.com
/index.php?topic=232423.0
release-notes, vendor-advisory
Sources
- CVE List CVE-2020-13657
- NVD CVE-2020-13657
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