What’s Vulnerable › Vulnerabilities

CVE-2020-11049: Out-of-bounds Read in FreeRDPrdp_read_share_control_header

• Severity: low (CVSS 2.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-05-07 · updated 2026-06-17
• Weakness: CWE-125

Description

In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bound read of client memory that is then passed on to the protocol parser. This has been patched in 2.0.0.

Affected products

• Canonical Ubuntu Linux: 16.04, 18.04, 19.10, 20.04
• Debian Linux: 10.0
• FreeRDP: from 1.1.0 (excl.) before 2.0.0 — fixed in 2.0.0

How to fix

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

References

• https://github.com/FreeRDP/FreeRDP/commit/c367f65d42e0d2e1ca248998175180aa9c2eacd0
• https://github.com/FreeRDP/FreeRDP/issues/6008
• https://github.com/FreeRDP/FreeRDP/pull/6019
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wwh7-r2r8-xjpr
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
• https://usn.ubuntu.com/4379-1/
• https://usn.ubuntu.com/4382-1/
• https://github.com/FreeRDP/FreeRDP/commit/c367f65d42e0d2e1ca248998175180aa9c2eacd0
• https://github.com/FreeRDP/FreeRDP/issues/6008
• https://github.com/FreeRDP/FreeRDP/pull/6019
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wwh7-r2r8-xjpr
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html

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