What is CVE-2026-0278?

CVE-2026-0278 is a high-severity vulnerability in Microsoft Windows, classified under Protection Mechanism Failure. CVSS score: 7.8/10. Published 2026-07-09.

How severe is CVE-2026-0278?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Microsoft Windows

CVE-2026-0278

Multiple protection mechanism failures in the Prisma Access Agent Data Loss Prevention (DLP) component for Windows allow a local user to bypass DLP policy enforcement controls. The Prisma Access Agent on macOS is not affected.

EPSS: 0.001 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Windows
Palo Alto Networks Prisma Access Agent — versions 24.0, All
Paloaltonetworks Prisma_access_agent

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

psirt@paloaltonetworks.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-0278?: CVE-2026-0278 is a high-severity vulnerability in Microsoft Windows, classified under Protection Mechanism Failure. CVSS score: 7.8/10. Published 2026-07-09.
How severe is CVE-2026-0278?: High severity. CVSS v3 base score is 7.8 out of 10.