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Vulnerability record · CVE-2018-8786 · published 29 November 2018

CVE-2018-8786: Freerdp out-of-bounds write vulnerability

Freerdp · Freerdp

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

9.8 CVSS 3.1 Critical EPSS 8.2% · top 5.3% CWE-680 · CWE-680CWE-681 · CWE-681
9.8CVSS 3.1 base score, v2 7.5
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
16References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/106938 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:0697 Third Party Advisory
https://github.com/FreeRDP/FreeRDP/commit/445a5a42c500ceb80f8fa7f2c11f3682538033f3 PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00015.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YVJKO2DR5EY4C4QZOP7SNNB
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ ExploitThird Party Advisory
https://usn.ubuntu.com/3845-1/ Third Party Advisory
https://usn.ubuntu.com/3845-2/ Third Party Advisory
http://www.securityfocus.com/bid/106938 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:0697 Third Party Advisory
https://github.com/FreeRDP/FreeRDP/commit/445a5a42c500ceb80f8fa7f2c11f3682538033f3 PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00015.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YVJKO2DR5EY4C4QZOP7SNNB
https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ ExploitThird Party Advisory
https://usn.ubuntu.com/3845-1/ Third Party Advisory
https://usn.ubuntu.com/3845-2/ Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-8786), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.