CVE-2018-8786

Exp

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.

Published: 2018-11-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-8786 is rated High Exploit Risk (82.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 8.16%, 94th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-8786

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-8786

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 14.33% 8.16% -6.17%
2 2026-05-27 9.61% 14.33% +4.72%
3 2026-04-13 — 9.61% —

Full EPSS history (30 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-8786

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2018-8786

OS Trackers for CVE-2018-8786

vendor priority summary link
alpine critical CVE-2018-8786: 2 source package rows (freerdp, freerdp2); 13 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 13, open 0. https://security.alpinelinux.org/vuln/CVE-2018-8786
debian not yet assigned CVE-2018-8786 not yet assigned priority: Debian including 1 source packages (freerdp2), 2 status rows across 2 suites (bookworm, bullseye): resolved 2. https://security-tracker.debian.org/tracker/CVE-2018-8786
redhat high — https://access.redhat.com/security/cve/CVE-2018-8786
suse high CVE-2018-8786 severity important: SUSE including 78 source package names (freerdp-1.0.2-15.el7_6.1, freerdp-2.0.0~git.1463131968.4e66df7-12.8.1, …), 95 product×package rows across 20 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise Desktop 12 SP3, … (20 product lines)): Fixed 95. https://www.suse.com/security/cve/CVE-2018-8786/
ubuntu medium CVE-2018-8786 medium priority: Ubuntu including 2 source packages (freerdp, freerdp2), 12 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): released 8, DNE 3, needs-triage 1. https://ubuntu.com/security/CVE-2018-8786

Affected software / configurations for CVE-2018-8786

Vendor Product Version Raw CPE
freerdp freerdp <= 1.2.0 cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
freerdp freerdp 2.0.0 cpe:2.3:a:freerdp:freerdp:2.0.0:rc1:*:*:*:*:*:*
freerdp freerdp 2.0.0 cpe:2.3:a:freerdp:freerdp:2.0.0:rc2:*:*:*:*:*:*
freerdp freerdp 2.0.0 cpe:2.3:a:freerdp:freerdp:2.0.0:rc3:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.10 cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
fedoraproject fedora 28 cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*

References for CVE-2018-8786

cvelogic Threat Intelligence