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CVE-2020-9320

20
FAUCET Score

CVE-2020-9320 describes a virus-detection bypass vulnerability in Avira AV Engine versions prior to 8.3.54.138, affecting multiple Avira products including Endpoint, Small Business, and Free Security Suite. This medium-severity vulnerability (CVSS 5.5) allows an attacker to bypass detection via a crafted ISO archive, requiring user interaction but potentially leading to high integrity impacts. Despite the vendor's assertion that the vulnerability does not exist, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.3.54.138CPE matchmatch criteria
cpe:2.3:a:avira:anti-malware_sdk:*:*:*:*:*:*:*:*
< 8.3.54.138CPE matchmatch criteria
cpe:2.3:a:avira:antivirus_server:*:*:*:*:*:*:*:*
< 8.3.54.138CPE matchmatch criteria
cpe:2.3:a:avira:avira_antivirus_for_endpoint:*:*:*:*:*:*:*:*
< 8.3.54.138CPE matchmatch criteria
cpe:2.3:a:avira:avira_antivirus_for_small_business:*:*:*:*:*:*:*:*
< 8.3.54.138CPE matchmatch criteria
cpe:2.3:a:avira:avira_exchange_security:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.88%
Probability of exploitation in next 30 days
EPSS Percentile
85.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0288 is in the 94th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/156472/AVIRA-Generic-Malformed-Container-Bypass.html
Third Party AdvisoryVDB Entry
blog.zoller.lu / p/from-low-hanging-fruit-department-avira.html
Third Party Advisory
seclists.org / fulldisclosure/2020/Feb/31
Mailing ListThird Party Advisory
zoller.lu / %5BTZO-01-2020%5D%20AVIRA%20Generic%20Bypass%20ISO.pdf