CVE & CISA-KEV Catalog

CVE-2020-9320

MEDIUMEPSS 85th pctl

5.5

CVSS v3

Description

Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive. This affects versions before 8.3.54.138 of Antivirus for Endpoint, Antivirus for Small Business, Exchange Security (Gateway), Internet Security Suite for Windows, Prime, Free Security Suite for Windows, and Cross Platform Anti-malware SDK. NOTE: Vendor asserts that vulnerability does not exist in product

CWE-434Unrestricted File Upload

How to fix

Remediation Available

anti-malware sdkNVD

Affected:< 8.3.54.138Fixed in:8.3.54.138CVE-2020-9320derived from NVD

antivirus serverNVD

Affected:< 8.3.54.138Fixed in:8.3.54.138CVE-2020-9320derived from NVD

avira antivirus for endpointNVD

Affected:< 8.3.54.138Fixed in:8.3.54.138CVE-2020-9320derived from NVD

avira antivirus for small businessNVD

Affected:< 8.3.54.138Fixed in:8.3.54.138CVE-2020-9320derived from NVD

avira exchange securityNVD

Affected:< 8.3.54.138Fixed in:8.3.54.138CVE-2020-9320derived from NVD

avira free security suiteNVD

Affected:< 8.3.54.138Fixed in:8.3.54.138CVE-2020-9320derived from NVD

avira internet security suiteNVD

Affected:< 8.3.54.138Fixed in:8.3.54.138CVE-2020-9320derived from NVD

avira primeNVD

Affected:< 8.3.54.138Fixed in:8.3.54.138CVE-2020-9320derived 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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

2.81%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Third-Party Advisory3

Other references1

zoller.lu

Related Vulnerabilities

Other CWE-434 (Unrestricted File Upload) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-12617	High	8.1	100%	KEV	Fix
CVE-2018-15961	Critical	9.8	100%	KEV	-
CVE-2021-31207	Medium	6.6	100%	KEV + Ransom	Fix
CVE-2017-12615	High	8.1	100%	KEV + Ransom	-
CVE-2025-31324	Critical	10.0	99%	KEV + Ransom	-
CVE-2024-50623	Critical	9.8	99%	KEV + Ransom	Fix

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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.