Is CVE-2020-13657 in the CISA KEV catalog?

No. CVE-2020-13657 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-13657?

CVE-2020-13657 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2020-13657?

CVE-2020-13657 has an EPSS score of 0.40% (32th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-13657?

Upgrade avg antivirus to 20.4 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2020-13657

MEDIUM

5.5

CVSS v3

NVD

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.

How to fix

Remediation Available

avg antivirusNVD

Affected:< 20.4Fixed in:20.4CVE-2020-13657derived from NVD

free antivirusNVD

Affected:< 20.4Fixed in:20.4CVE-2020-13657derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

0.40%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Vendor Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.