Is CVE-2020-11582 actively exploited?

No active exploitation of CVE-2020-11582 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-11582 be exploited remotely?

Partially. CVE-2020-11582 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2020-11582?

CVE-2020-11582 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2020-11582

CWE-668Published: April 6, 2020· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official 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.)

NVD Source

Technical Analysis

CVE-2020-11582 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.