CVE-2020-8239
CRITICALCVSS 9.8/10EPSS 2.00%
Last modified
CVE-2020-8239 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability in the Pulse Secure Desktop Client < 9.1R9 is vulnerable to the client registry privilege escalation attack. This fix also requires Server Side Upgrade due to Standalone Host Checker Client (Windows) and Windows PDC.. EPSS estimates a 2.00% chance of exploitation in the next 30 days.
Description
A vulnerability in the Pulse Secure Desktop Client < 9.1R9 is vulnerable to the client registry privilege escalation attack. This fix also requires Server Side Upgrade due to Standalone Host Checker Client (Windows) and Windows PDC.
Metrics
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Pulsesecure | Pulse Secure Desktop Client | < 9.1 | — |
| Pulsesecure | Pulse Secure Desktop Client | 9.1 | R1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-8239?
A vulnerability in the Pulse Secure Desktop Client < 9.1R9 is vulnerable to the client registry privilege escalation attack. This fix also requires Server Side Upgrade due to Standalone Host Checker Client (Windows) and Windows PDC.
How severe is CVE-2020-8239?
CVE-2020-8239 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8239?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-8239?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST