Avira AV Engine before 8.3.54.138 allows virus-detection bypass via a crafted ISO archive.
Priority LOW 30CWE-434Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
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
Why it matters now
EPSS 0.02882 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:avira:anti-malware_sdk:*:*:*:*:*:*:*:* | before 8.3.54.138 | Vulnerable | Gen Digital |
| cpe:2.3:a:avira:antivirus_server:*:*:*:*:*:*:*:* | before 8.3.54.138 | Vulnerable | Gen Digital |
| cpe:2.3:a:avira:avira_antivirus_for_endpoint:*:*:*:*:*:*:*:* | before 8.3.54.138 | Vulnerable | Gen Digital |
| cpe:2.3:a:avira:avira_antivirus_for_small_business:*:*:*:*:*:*:*:* | before 8.3.54.138 | Vulnerable | Gen Digital |
| cpe:2.3:a:avira:avira_exchange_security:*:*:*:*:*:*:*:* | before 8.3.54.138 | Vulnerable | Gen Digital |
| cpe:2.3:a:avira:avira_free_security_suite:*:*:*:*:*:windows:*:* | before 8.3.54.138 | Vulnerable | Gen Digital |
| cpe:2.3:a:avira:avira_internet_security_suite:*:*:*:*:*:windows:*:* | before 8.3.54.138 | Vulnerable | Gen Digital |
| cpe:2.3:a:avira:avira_prime:*:*:*:*:*:*:*:* | before 8.3.54.138 | Vulnerable | Gen Digital |
- cpe:2.3:a:avira:anti-malware_sdk:*:*:*:*:*:*:*:* Versions before 8.3.54.138 Vulnerable ·Gen Digital
- cpe:2.3:a:avira:antivirus_server:*:*:*:*:*:*:*:* Versions before 8.3.54.138 Vulnerable ·Gen Digital
- cpe:2.3:a:avira:avira_antivirus_for_endpoint:*:*:*:*:*:*:*:* Versions before 8.3.54.138 Vulnerable ·Gen Digital
- cpe:2.3:a:avira:avira_antivirus_for_small_business:*:*:*:*:*:*:*:* Versions before 8.3.54.138 Vulnerable ·Gen Digital
- cpe:2.3:a:avira:avira_exchange_security:*:*:*:*:*:*:*:* Versions before 8.3.54.138 Vulnerable ·Gen Digital
- cpe:2.3:a:avira:avira_free_security_suite:*:*:*:*:*:windows:*:* Versions before 8.3.54.138 Vulnerable ·Gen Digital
- cpe:2.3:a:avira:avira_internet_security_suite:*:*:*:*:*:windows:*:* Versions before 8.3.54.138 Vulnerable ·Gen Digital
- cpe:2.3:a:avira:avira_prime:*:*:*:*:*:*:*:* Versions before 8.3.54.138 Vulnerable ·Gen Digital
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9320
- 2026-10-03 Alias added: GHSA-cw54-pxxw-878x
References
Advisory 3
Sources
- CVE-2020-9320 · CVE Program
- CVE-2020-9320 · NVD
- FIRST EPSS
- GHSA-cw54-pxxw-878x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences