What’s Vulnerable › Vulnerabilities

CVE-2020-11524

• Severity: medium (CVSS 6.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-05-15 · updated 2026-06-17
• Weakness: CWE-787

Description

libfreerdp/codec/interleaved.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Out-of-bounds Write.

Affected products

• Canonical Ubuntu Linux: 18.04, 19.10, 20.04
• FreeRDP: from 1.0.0 (excl.) before 2.0.0; 2.0.0, 2.0.0-rc0, 2.0.0-rc1, 2.0.0-rc2, 2.0.0-rc3, 2.0.0-rc4 — fixed in 2.0.0
• openSUSE Leap: 15.1

How to fix

Upgrade to a fixed version: FreeRDP 2.0.0. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.html
• https://github.com/FreeRDP/FreeRDP/commits/master
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cgw8-3mp2-p5qw
• https://pub.freerdp.com/cve/CVE-2020-11524/pocAnalysis_3.pdf
• https://usn.ubuntu.com/4379-1/
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.html
• https://github.com/FreeRDP/FreeRDP/commits/master
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cgw8-3mp2-p5qw
• https://pub.freerdp.com/cve/CVE-2020-11524/pocAnalysis_3.pdf
• https://usn.ubuntu.com/4379-1/

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