What is CVE-2020-11580?

CVE-2020-11580 is a critical-severity vulnerability in Apple Macos, classified under Improper Certificate Validation. CVSS score: 9.1/10. Published 2020-04-06.

How severe is CVE-2020-11580?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2020-11580 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Apple Macos

CVE-2020-11580

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, accepts an arbitrary SSL certificate.

Vulnerability class: Improper Certificate Validation

EPSS: 0.011 (60.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2020-11580?: CVE-2020-11580 is a critical-severity vulnerability in Apple Macos, classified under Improper Certificate Validation. CVSS score: 9.1/10. Published 2020-04-06.
How severe is CVE-2020-11580?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2020-11580 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.