CVE-2018-8784

freerdp: Heap-based buffer overflow in zgfx_decompress_segment() function

Published 29 Nov 2018Modified 17 Jun 2026CWE 120, 787

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Red Hat6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Ubuntu (medium).

Description

FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory corruption and probably even a remote code execution.

Affected packages and fixed versions

Source	Package	Fixed in
debian 11	freerdp2	2.0.0~git20181120.1.e21b72c95+dfsg1-1
debian 12	freerdp2	2.0.0~git20181120.1.e21b72c95+dfsg1-1
echo	freerdp2	2.0.0~git20181120.1.e21b72c95+dfsg1-1
ubuntu 18.04	freerdp2	2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
ubuntu 18.04-ESM	freerdp2	2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
ubuntu 18.10	freerdp2	2.0.0~git20180411.1.7a7b1802+dfsg1-2ubuntu0.1
ubuntu 19.04	freerdp2	2.0.0~git20181120.1.e21b72c95+dfsg1-1

References

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.