GlobalProtect on MacOS: Local denial-of-service (DoS) vulnerability.

published 2020-02-12 6y ago modified 2026-06-17 4mo ago also EUVD-2020-12766

cvss: 4.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits: 0; none known

A denial-of-service (DoS) vulnerability in Palo Alto Networks GlobalProtect software running on Mac OS allows authenticated local users to cause the Mac OS kernel to hang or crash. This issue affects GlobalProtect 5.0.5 and earlier versions of GlobalProtect 5.0 on Mac OS.

Patch / fix

fixed in 1

Palo Alto Networks GlobalProtect 5.0.6

Is CVE-2020-1976 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.7	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	4.9	AV:L/AC:L/Au:N/C:N/I:N/A:C

Affected products

Palo Alto Networks GlobalProtect

Classification

Weakness

CWE-642 External Control of Critical State Data
CWE-20 Improper Input Validation

References

security.paloaltonetworks.com /CVE-2020-1976
vendor-advisory

Sources

CVE List CVE-2020-1976
NVD CVE-2020-1976

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.