What’s Vulnerable › Vulnerabilities

CVE-2020-11040: Out-of-bounds Read in FreeRDP

• Severity: low (CVSS 2.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-29 · updated 2026-06-17
• Weakness: CWE-125

Description

In FreeRDP less than or equal to 2.0.0, there is an out-of-bound data read from memory in clear_decompress_subcode_rlex, visualized on screen as color. This has been patched in 2.1.0.

Affected products

• Debian Linux: 10.0
• FreeRDP: before 2.1.0 — fixed in 2.1.0
• openSUSE Leap: 15.1

How to fix

Upgrade to a fixed version: FreeRDP 2.1.0. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.html
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-x4wq-m7c9-rjgr
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.html
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-x4wq-m7c9-rjgr
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html

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