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CVE-2024-32040

28
FAUCET Score

CVE-2024-32040 is a critical integer underflow vulnerability affecting FreeRDP clients prior to versions 3.5.0 and 2.11.6 when connecting to servers utilizing the NSC codec. With a CVSS score of 9.8, this vulnerability allows unauthenticated remote attackers to achieve high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, organizations should prioritize patching or implementing the recommended workaround of disabling the NSC codec.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.11.6CPE matchmatch criteria
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
>= 3.0.0, < 3.5.0CPE matchmatch criteria
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
38CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
39CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
40CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.92%
Probability of exploitation in next 30 days
EPSS Percentile
77.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0192 is in the 66th percentile among its peer group of 36,897 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

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)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: freerdp-2:2.11.7-1.el9
View patch
github_advisoryworkaround availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: freerdp

Vendor Advisories (1)

redhatCVE-2024-32040Low

freerdp: integer underflow in nsc_rle_decode

Apr 22, 2024

References

lists.debian.org / debian-lts-announce/2025/02/msg00016.html
github.com / FreeRDP/FreeRDP/pull/10077
Issue Tracking
github.com / FreeRDP/FreeRDP/releases/tag/2.11.6
Release Notes
github.com / FreeRDP/FreeRDP/releases/tag/3.5.0
Release Notes
github.com / FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5
MitigationVendor Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ
Third Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/7SIS6NUNLUBOV4CPCSWKDE6T6C2W3WTR
Third Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/PX3U6YPZQ7PEJBVKSBUOLWVH7DHROHY5
Third Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ
Third Party Advisory