CVE-2020-11038

Name: CVE-2020-11038
Creator: NVD / NIST
Published: 2020-05-29T19:15:10.31+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.35%

Last modified Jun 17, 2026

CVE-2020-11038 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. EPSS estimates a 1.35% chance of exploitation in the next 30 days.

Description

In FreeRDP less than or equal to 2.0.0, an Integer Overflow to Buffer Overflow exists. When using /video redirection, a manipulated server can instruct the client to allocate a buffer with a smaller size than requested due to an integer overflow in size calculation. With later messages, the server can manipulate the client to write data out of bound to the previously allocated buffer. This has been patched in 2.1.0.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

EPSS Probability

1.35%

67.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Freerdp	Freerdp	< 2.1.0
Opensuse	Leap	15.1
Debian	Debian Linux	10.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlMailing List, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h25x-cqr6-fp6gThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlMailing List, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h25x-cqr6-fp6gThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory

Timeline

Published: May 29, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11038?

How severe is CVE-2020-11038?

CVE-2020-11038 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11038?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-11038?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST