Is CVE-2021-41160 in the CISA KEV catalog?

No. CVE-2021-41160 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-41160?

CVE-2021-41160 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-41160?

CVE-2021-41160 has an EPSS score of 1.55% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-41160?

Upgrade freerdp2 on debian 11 to 2.3.0+dfsg1-2+deb11u2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-41160

MEDIUMEPSS 72th pctl

5.3

CVSS v3

NVD

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a malicious server might trigger out of bound writes in a connected client. Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

freerdp2Debian

Fixed in:2.3.0+dfsg1-2+deb11u2CVE-2021-41160

Fixed in:2.4.1+dfsg1-1CVE-2021-41160

freerdp2Ubuntu

Fixed in:2.2.0+dfsg1-0ubuntu0.18.04.2USN-5154-1

Fixed in:2.2.0+dfsg1-0ubuntu0.20.04.2USN-5154-1

libfreerdp-client2-2Ubuntu

Fixed in:2.2.0+dfsg1-0ubuntu0.18.04.2USN-5154-1

Fixed in:2.2.0+dfsg1-0ubuntu0.20.04.2USN-5154-1

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.55%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Third-Party Advisory2

Other references5

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 2025-11-03.