CVE-2020-11018 Out of bound read in cliprdr_server_receive_capabilities in FreeRDP

What is CVE-2020-11018?

CVE-2020-11018 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 29 May 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In FreeRDP less than or equal to 2.0.0, a possible resource exhaustion vulnerability can be performed. Malicious clients could trigger out of bound reads causing memory allocation with random size. This has been fixed in 2.1.0.

Weakness: CWE-125

Which versions are affected by CVE-2020-11018?

It affects 3 products.

Products include Debian Debian Linux, Freerdp Freerdp, Opensuse Leap.

How do I fix CVE-2020-11018?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-11018 being exploited?

There is no known exploitation of CVE-2020-11018 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-11018, GHSA-8cvc-vcw7-6mfw, UBUNTU-CVE-2020-11018.