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CVE-2020-11582

8.8 · HIGH

An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06.

Published Apr 6, 2020CWE-668EPSS 0.88%

Overview

CVE-2020-11582 is a high-severity vulnerability. It was published on April 6, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, launches a TCP server that accepts local connections on a random port. This can be reached by local HTTP clients, because up to 25 invalid lines are ignored, and because DNS rebinding can occur. (This server accepts, for example, a setcookie command that might be relevant to CVE-2020-11581 exploitation.)

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.lsd.cat/g/pulse-host-checker-rceRefkb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426Refgit.lsd.cat/g/pulse-host-checker-rceRefkb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426

How CyberStrike helps

Frequently asked questions

What is CVE-2020-11582?

CVE-2020-11582 is a high-severity vulnerability. It was published on April 6, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2020-11582?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-11582?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-11582?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-11582 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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