CVE-2020-13396: Canonical Ubuntu Linux

High severity, CVSS 7.1. EPSS: 2.3% chance of exploitation in the next 30 days.

An issue was discovered in FreeRDP before 2.1.1. An out-of-bounds (OOB) read vulnerability has been detected in ntlm_read_ChallengeMessage in winpr/libwinpr/sspi/NTLM/ntlm_message.c.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 19.10 only; version 20.04 only
• Debian Debian Linux: version 9.0 only; version 10.0 only
• Freerdp Freerdp: before 2.1.1 (fixed in 2.1.1)
• Opensuse Leap: version 15.1 only

Published 2020-05-22. Last modified 2026-06-17.