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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.011 (63.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.lsd.cat/g/pulse-host-checker-rce (Exploit, Third Party Advisory)
- kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426 (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.