Is CVE-2018-8788 in the CISA KEV catalog?

No. CVE-2018-8788 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-8788?

CVE-2018-8788 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-8788?

CVE-2018-8788 has an EPSS score of 7.40% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-8788?

Upgrade freerdp2 on debian 11 to 2.0.0~git20181120.1.e21b72c95+dfsg1-1 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2018-8788

CRITICALEPSS 94th pctl

9.8

CVSS v3

NVD

Description

FreeRDP prior to version 2.0.0-rc4 contains an Out-Of-Bounds Write of up to 4 bytes in function nsc_rle_decode() that results in a memory corruption and possibly even a remote code execution.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

freerdp2Debian

Fixed in:2.0.0~git20181120.1.e21b72c95+dfsg1-1CVE-2018-8788

freerdpUbuntu

Fixed in:1.0.2-2ubuntu1.2USN-3845-1

Fixed in:1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3USN-3845-1

Fixed in:1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.1USN-3845-2

freerdp2Ubuntu

Fixed in:2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1USN-3845-1

libfreerdp-client1.1Ubuntu

Fixed in:1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3USN-3845-1

Fixed in:1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.1USN-3845-2

libfreerdp-client2-2Ubuntu

Fixed in:2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1USN-3845-1

libfreerdp1Ubuntu

Fixed in:1.0.2-2ubuntu1.2USN-3845-1

libfreerdp2-2Ubuntu

Fixed in:2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1USN-3845-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

7.40%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Patch1

github.com

Exploit1

research.checkpoint.com

Third-Party Advisory3

Other references2

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.