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CVE-2018-8787

34
FAUCET Score

CVE-2018-8787 describes an Integer Overflow leading to a Heap-Based Buffer Overflow in FreeRDP versions prior to 2.0.0-rc4, specifically within the gdi_Bitmap_Decompress() function. This critical vulnerability, affecting products like Canonical, Debian, FreeRDP, and Red Hat, can result in memory corruption and potentially remote code execution. With a CVSS score of 9.8 (Critical) and an EPSS score indicating higher exploitability than 93.89% of CVEs, it poses a significant risk due to its network-based attack vector and low attack complexity. Despite its high severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

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
8.36%
Probability of exploitation in next 30 days
EPSS Percentile
94.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0836 is in the 90th percentile among its peer group of 36,835 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-2018-8787Important

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

Oct 22, 2018

References

access.redhat.com / errata/RHSA-2019:0697
Third Party Advisory
github.com / FreeRDP/FreeRDP/commit/09b9d4f1994a674c4ec85b4947aa656eda1aed8a
PatchVendor Advisory
lists.debian.org / debian-lts-announce/2019/02/msg00015.html
Mailing ListThird Party Advisory
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