What is CVE-2026-45476?

CVE-2026-45476 is a high-severity vulnerability in Microsoft Azure Network Adapter, classified under Use After Free. CVSS score: 8.2/10. Published 2026-06-09.

How severe is CVE-2026-45476?

High severity. CVSS v3 base score is 8.2 out of 10.

Use After Free in Microsoft Azure Network Adapter

CVE-2026-45476

Use after free in Linux MANA Driver allows an authorized attacker to elevate privileges locally.

Vulnerability class: Use-After-Free

Published 2026-06-09 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (26.2th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Microsoft Azure Network Adapter
Microsoft Linux Kernel - Mana Network Driver — versions 1.0.0

Weakness classification (CWE)

CWE-416 — Use After Free

References

Microsoft Azure Network Adapter Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-45476?: CVE-2026-45476 is a high-severity vulnerability in Microsoft Azure Network Adapter, classified under Use After Free. CVSS score: 8.2/10. Published 2026-06-09.
How severe is CVE-2026-45476?: High severity. CVSS v3 base score is 8.2 out of 10.