CVE-2020-15103

What it is

In FreeRDP less than or equal to 2.1.2, an integer overflow exists due to missing input sanitation in rdpegfx channel. All FreeRDP clients are affected. The input rectangles from the server are not checked against local surface coordinates and blindly accepted. A malicious server can send data that will crash the client later on (invalid length arguments to a `memcpy`) This has been fixed in 2.2.0. As a workaround, stop using command line arguments /gfx, /gfx-h264 and /network:auto

At a glance

Exploitability

Can be exploited over the network with a low-privilege account, but needs a user to act. Limited direct impact.

Exploit odds

1.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-07-27 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:56 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.5% in the next 30 days (EPSS).
• Severity: 3.5 LOW (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-07-27 18:15 UTC

Last modified

2026-06-17 02:56 UTC

Exploit probability

1.5% · EPSS, next 30 days

Weakness

CWE-680

Record status

Modified

Affected

• Freerdp ≤ 2.1.2
• Fedoraproject Fedora 31
• Fedoraproject Fedora 32
• Opensuse Leap 15.1
• Canonical Ubuntu Linux 18.04
• Canonical Ubuntu Linux 20.04
• Debian Linux 10.0

Attack profile CVSS 3.1 · 3.5

Attack vector

Network

Complexity

Low

Privileges needed

Low

User interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2020-15103.md and follow it. Check whether this project is affected by CVE-2020-15103. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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