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CVE-2018-8786

34
FAUCET Score

CVE-2018-8786 is a critical vulnerability in FreeRDP versions prior to 2.0.0-rc4, affecting products from vendors like Canonical, Debian, Fedora, and Red Hat. It involves an integer truncation leading to a heap-based buffer overflow, potentially causing memory corruption and remote code execution. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without user interaction, allowing for complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, its high severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2.0CPE matchmatch criteria
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:freerdp:freerdp:2.0.0:rc1:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:freerdp:freerdp:2.0.0:rc2:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:freerdp:freerdp:2.0.0:rc3:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.16%
Probability of exploitation in next 30 days
EPSS Percentile
94.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0816 is in the 90th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: freerdp-0:1.0.2-15.el7_6.1
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: freerdp

Vendor Advisories (1)

redhatCVE-2018-8786Important

freerdp: Integer truncation leading to heap-based buffer overflow in update_read_bitmap_update() function

Oct 22, 2018

References

access.redhat.com / errata/RHSA-2019:0697
Third Party Advisory
github.com / FreeRDP/FreeRDP/commit/445a5a42c500ceb80f8fa7f2c11f3682538033f3
PatchVendor Advisory
lists.debian.org / debian-lts-announce/2019/02/msg00015.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/YVJKO2DR5EY4C4QZOP7SNNBEW2JW6FHX
research.checkpoint.com / reverse-rdp-attack-code-execution-on-rdp-clients
ExploitThird Party Advisory
usn.ubuntu.com / 3845-1
Third Party Advisory
usn.ubuntu.com / 3845-2
Third Party Advisory
securityfocus.com / bid/106938
Third Party AdvisoryVDB Entry