CVE-2020-9320
Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive.
Does this matter?
Lower severity and a low EPSS score (2.88%). Track it; it rarely justifies an emergency change on its own.
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
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- EPSS
- 2.88% probability · 87th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- avira/anti-malware sdk · avira/antivirus server · avira/avira antivirus for endpoint · avira/avira antivirus for small business · avira/avira exchange security · avira/avira free security suite · avira/avira internet security suite · avira/avira prime
- Source
- cve@mitre.org
EPSS 2.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://packetstormsecurity.com/files/156472/AVIRA-Generic-Malformed-Container-Bypass.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Feb/31Mailing List, Third Party Advisory
- https://blog.zoller.lu/p/from-low-hanging-fruit-department-avira.htmlThird Party Advisory
- https://www.zoller.lu/%5BTZO-01-2020%5D%20AVIRA%20Generic%20Bypass%20ISO.pdf
- http://packetstormsecurity.com/files/156472/AVIRA-Generic-Malformed-Container-Bypass.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Feb/31Mailing List, Third Party Advisory
- https://blog.zoller.lu/p/from-low-hanging-fruit-department-avira.htmlThird Party Advisory
- https://www.zoller.lu/%5BTZO-01-2020%5D%20AVIRA%20Generic%20Bypass%20ISO.pdf
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.