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CVE-2024-9157· NVD / CVE Program· CNA Synaptics

Privilege Escalation Vulnerability in CxUIUSvc service

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.34% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Windows 10 for 32-bit Systems 10.0.10240.20947; Windows 10 for x64-based Systems 10.0.10240.20947; Windows 10 Version 1607 for 32-bit Systems 10.0.14393.7876.

Low priority for now. Upgrade to Windows 10 for 32-bit Systems 10.0.10240.20947; Windows 10 for x64-based Systems 10.0.10240.20947; Windows 10 Version 1607 for 32-bit Systems 10.0.14393.7876 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

** UNSUPPORTED WHEN ASSIGNED **  A privilege escalation vulnerability in CxUIUSvc64.exe and CxUIUSvc32.exe of Synaptics audio drivers allows a local authorized attacker to load a DLL in a privileged process. Out of an abundance of caution, this CVE ID is being assigned to better serve our customers and ensure all who are still running this product understand that the product is End-of-Life and should be removed. For more information on this, refer to the CVE Record’s reference information.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Mar 11, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 26th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Synaptics
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Synaptics). Independent of NVD's CPE analysis and usually ahead of it.

  • Synaptics Synaptics Audio Driver

    • before 9.0.282.*affected
    • before 9.0.285.*affected
    • before 9.0.278.*affected

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Windows 10 for 32-bit Systems10.0.10240.20947 · KB5053618Microsoft (MSRC)
Windows 10 for x64-based Systems10.0.10240.20947 · KB5053618Microsoft (MSRC)
Windows 10 Version 1607 for 32-bit Systems10.0.14393.7876 · KB5053594Microsoft (MSRC)
Windows 10 Version 1607 for x64-based Systems10.0.14393.7876 · KB5053594Microsoft (MSRC)
Windows 10 Version 1809 for 32-bit Systems10.0.17763.7009 · KB5053596Microsoft (MSRC)
Windows 10 Version 1809 for x64-based Systems10.0.17763.7009 · KB5053596Microsoft (MSRC)
Windows 10 Version 21H2 for 32-bit Systems10.0.19044.5608 · KB5053606Microsoft (MSRC)
Windows 10 Version 21H2 for ARM64-based Systems10.0.19044.5608 · KB5053606Microsoft (MSRC)
Windows 10 Version 21H2 for x64-based Systems10.0.19044.5608 · KB5053606Microsoft (MSRC)
Windows 10 Version 22H2 for 32-bit Systems10.0.19045.5608 · KB5053606Microsoft (MSRC)
Windows 10 Version 22H2 for ARM64-based Systems10.0.19045.5608 · KB5053606Microsoft (MSRC)
Windows 10 Version 22H2 for x64-based Systems10.0.19045.5608 · KB5053606Microsoft (MSRC)
Windows 11 Version 22H2 for ARM64-based Systems10.0.22621.5039 · KB5053602Microsoft (MSRC)
Windows 11 Version 22H2 for x64-based Systems10.0.22621.5039 · KB5053602Microsoft (MSRC)
Windows 11 Version 23H2 for ARM64-based Systems10.0.22631.5039 · KB5053602Microsoft (MSRC)
Windows 11 Version 23H2 for x64-based Systems10.0.22631.5039 · KB5053602Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.3403 · KB5053636Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.3476 · KB5053598Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.3403 · KB5053636Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.3476 · KB5053598Microsoft (MSRC)
Windows Server 2008 for 32-bit Systems Service Pack 26.0.6003.23168 · KB5053888Microsoft (MSRC)
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)6.0.6003.23168 · KB5053888Microsoft (MSRC)
Windows Server 2008 for x64-based Systems Service Pack 26.0.6003.23168 · KB5053888Microsoft (MSRC)
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)6.0.6003.23168 · KB5053888Microsoft (MSRC)
Windows Server 2008 R2 for x64-based Systems Service Pack 16.1.7601.27618 · KB5053620Microsoft (MSRC)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)6.1.7601.27618 · KB5053620Microsoft (MSRC)
Windows Server 20126.2.9200.25368 · KB5053886Microsoft (MSRC)
Windows Server 2012 (Server Core installation)6.2.9200.25368 · KB5053886Microsoft (MSRC)
Windows Server 2012 R26.3.9600.22470 · KB5053887Microsoft (MSRC)
Windows Server 2012 R2 (Server Core installation)6.3.9600.22470 · KB5053887Microsoft (MSRC)

+13

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-284 · Improper Access Control

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records