TI-2023-04599 Aliases CVE-2023-4996 GHSA-ccf8-r983-v699

Local privilege escalation in Netskope Client

LOW 38CWE-281Published 2023-11-06 · Updated 2024-09-05

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Netskope was made aware of a security vulnerability in its NSClient product for version 100 & prior where a malicious non-admin user can disable the Netskope client by using a specially-crafted package. The root cause of the problem was a user control code when called by a Windows ServiceController did not validate the permissions associated with the user before executing the user control code. This user control code had permissions to terminate the NSClient service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00445 38th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Netskope	Netskope Client	100 & prior	—	No fix listed	CNA

Netskope Client VendorNetskope Affected 100 & prior Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:netskope:netskope::::::::	before 101	Vulnerable	Netskope
cpe:2.3:o:microsoft:windows:-:::::::*	not specified by NVD	Running on	Microsoft

cpe:2.3:a:netskope:netskope:*:*:*:*:*:*:*:* Versions before 101 Vulnerable ·Netskope
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-4996
2026-10-03 Alias added: GHSA-ccf8-r983-v699

References

Advisory 1

https://www.netskope.com/company/security-compliance-and-assurance/security-advisories-and-disclosures/netskope-security-advisory-nskpsa-2023-003

TI-2020-15056 Netskope Client through 77 allows low-privileged users to elevate their privileges to NT AUTHORITY\SYSTEM. CVSS 3.1HIGH 8.8
TI-2024-06860 Client Enrollment Process Bypass CVSS 4.0HIGH 8.5
TI-2021-20302 Sensitive Information store in NSClient logs CVSS 3.1HIGH 8.4
TI-2023-02129 Local privilege escalation in Netskope Client CVSS 3.1HIGH 7.8
TI-2020-17407 A CSV injection vulnerability in the Admin portal for Netskope 75.0 allows an… CVSS 3.1HIGH 7.8
TI-2019-09019 Netskope client command injections vulnerability CVSS 3.1HIGH 7.8

See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences