CVE-2020-9320

mediumpriority · track · 23EPSS 0.029 · 87 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.88% (87th) EPSS

CVSS 4.3 · medium

Is it mine?

9 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

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

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-434USprimary

affected products (9)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
avira anti-malware sdk< 8.3.54.138nvdUScpe:2.3:a:avira:anti-malware_sdk:*:*:*:*:*:*:*:*
avira antivirus server< 8.3.54.138nvdUScpe:2.3:a:avira:antivirus_server:*:*:*:*:*:*:*:*
avira avira antivirus for endpoint< 8.3.54.138nvdUScpe:2.3:a:avira:avira_antivirus_for_endpoint:*:*:*:*:*:*:*:*
avira avira antivirus for small business< 8.3.54.138nvdUScpe:2.3:a:avira:avira_antivirus_for_small_business:*:*:*:*:*:*:*:*
avira avira exchange security< 8.3.54.138nvdUScpe:2.3:a:avira:avira_exchange_security:*:*:*:*:*:*:*:*
avira avira free security suite< 8.3.54.138nvdUScpe:2.3:a:avira:avira_free_security_suite:*:*:*:*:*:*:*:*
avira avira internet security suite< 8.3.54.138nvdUScpe:2.3:a:avira:avira_internet_security_suite:*:*:*:*:*:*:*:*
avira avira prime< 8.3.54.138nvdUScpe:2.3:a:avira:avira_prime:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-02-20modified 2026-06-17

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+5032 more

references (15)

External citations — patches, advisories, analysis.

scry

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