CVE-2020-9363: Sophos Cloud Optix

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

The Sophos AV parsing engine before 2020-01-14 allows virus-detection bypass via a crafted ZIP archive. This affects Endpoint Protection, Cloud Optix, Mobile, Intercept X Endpoint, Intercept X for Server, and Secure Web Gateway. NOTE: the vendor feels that this does not apply to endpoint-protection products because the virus would be detected upon extraction.

Affected products

• Sophos Cloud Optix: before 2020-01-14 (fixed in 2020-01-14)
• Sophos Endpoint Protection: before 2020-01-14 (fixed in 2020-01-14)
• Sophos Intercept X Endpoint: before 2020-01-14 (fixed in 2020-01-14)
• Sophos Intercept X For Server: before 2020-01-14 (fixed in 2020-01-14)
• Sophos Mobile: before 2020-01-14 (fixed in 2020-01-14)
• Sophos Secure Web Gateway: before 2020-01-14 (fixed in 2020-01-14)

Published 2020-02-24. Last modified 2026-06-17.