CVE-2020-9320

Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive. This...

5.5 MediumDisputed

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

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

2.88%Up 1.8 points since Apr 14, 2021

What each source reports

NVD Score used 5.5

Record: CVE-2020-9320
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-434
Updated: 2026-11-02

CVE List No score

Record: CVE-2020-9320
Updated: 2026-11-02

EUVDEUVD-2020-30142 No score

Record: EUVD-2020-30142
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cw54-pxxw-878x 5.5

Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive. This...

Record: GHSA-cw54-pxxw-878x
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-434
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-9320 is a medium vulnerability (CVSS 5.5) in Avira Anti-malware Sdk, published February 20, 2020. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 2.88%, the 86th percentile.