How severe is CVE-2020-1976?

CVE-2020-1976 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-1976 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1976?

CVE-2020-1976 affects Paloaltonetworks Globalprotect. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-1976?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-1976 published?

CVE-2020-1976 was published on 2020-02-12 and last updated on 2026-06-17.

CVE-2020-1976

CVE-2020-1976 is a medium-severity vulnerability in Paloaltonetworks Globalprotect with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
CVSS v2: 4.9
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Paloaltonetworks Globalprotect
Published: 2020-02-12
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2020-1976?: 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.
How severe is CVE-2020-1976?: CVE-2020-1976 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-1976 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1976?: CVE-2020-1976 affects Paloaltonetworks Globalprotect. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-1976?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-1976 published?: CVE-2020-1976 was published on 2020-02-12 and last updated on 2026-06-17.

References

https://security.paloaltonetworks.com/CVE-2020-1976

Affected products (1)

cpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:macos:*:*

More vulnerabilities in Paloaltonetworks Globalprotect

CVE-2025-4232 — High (CVSS 8.8): An improper neutralization of wildcards vulnerability in the log collection feature of Palo Alto Networks…
CVE-2024-5921 — High (CVSS 8.8): An insufficient certification validation issue in the Palo Alto Networks GlobalProtect app enables attackers to connect…
CVE-2021-3057 — High (CVSS 8.1): A stack-based buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect app that enables a…
CVE-2025-0118 — High (CVSS 8.0): A vulnerability in the Palo Alto Networks GlobalProtect app on Windows allows a remote attacker to run ActiveX controls…
CVE-2024-9473 — High (CVSS 7.8): A privilege escalation vulnerability in the Palo Alto Networks GlobalProtect app on Windows allows a locally…
CVE-2024-5915 — High (CVSS 7.8): A privilege escalation (PE) vulnerability in the Palo Alto Networks GlobalProtect app on Windows devices enables a…

All CVEs affecting Paloaltonetworks Globalprotect →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →