CVE-2020-11523

Name: CVE-2020-11523
Creator: NVD / NIST
Published: 2020-05-15T17:15:11.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.6/10EPSS 2.00%

Last modified Jun 17, 2026

CVE-2020-11523 is a medium-severity vulnerability rated 6.6/10 on the CVSS scale. libfreerdp/gdi/region.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Integer Overflow.. EPSS estimates a 2.00% chance of exploitation in the next 30 days.

Description

libfreerdp/gdi/region.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Integer Overflow.

Metrics

CVSS 3.1

6.6/10

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

EPSS Probability

2.00%

78.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Freerdp	Freerdp	> 1.0.0, < 2.0.0
Freerdp	Freerdp	2.0.0
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.10
Canonical	Ubuntu Linux	20.04
Debian	Debian Linux	9.0
Opensuse	Leap	15.1

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlThird Party Advisory
https://github.com/FreeRDP/FreeRDP/commits/masterPatch, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qrh-8cp8-4x42Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00054.htmlThird Party Advisory
https://pub.freerdp.com/cve/CVE-2020-11523/pocAnalysis_2.pdfExploit, Vendor Advisory
https://usn.ubuntu.com/4379-1/Third Party Advisory
https://usn.ubuntu.com/4382-1/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlThird Party Advisory
https://github.com/FreeRDP/FreeRDP/commits/masterPatch, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qrh-8cp8-4x42Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00054.htmlThird Party Advisory
https://pub.freerdp.com/cve/CVE-2020-11523/pocAnalysis_2.pdfExploit, Vendor Advisory
https://usn.ubuntu.com/4379-1/Third Party Advisory
https://usn.ubuntu.com/4382-1/Third Party Advisory

Timeline

Published: May 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11523?

libfreerdp/gdi/region.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Integer Overflow.

How severe is CVE-2020-11523?

CVE-2020-11523 has a CVSS score of 6.6/10 (MEDIUM severity). The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11523?

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-2020-11523?

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

Scan your code now

Source: NVD / NIST