Is CVE-2026-45476 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-45476 being exploited in the wild.

How severe is CVE-2026-45476?

High severity, with a CVSS score of 8.2, published 9 June 2026.

Which products and versions are affected?

Linux Linux Kernel MANA Driver.

Is there a fix for CVE-2026-45476?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-45476 attacked?

It is attacked with local access, in an operating system.

Am I affected by CVE-2026-45476?

Check whether you run Linux Kernel. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-45476: Linux MANA Driver use after free privilege escalation

CVE-2026-45476 · Severity: high · CVSS 8.2 · Published 2026-06-09

A security vulnerability exists in the Microsoft Azure Network Adapter (MANA) driver for Linux, which manages high-performance network interfaces in cloud environments. An attacker who already has high-level access to a system could exploit this flaw to gain full control over the underlying operating system. This could lead to a complete compromise of the affected server, allowing the attacker to access sensitive data or disrupt services.

Technologies: Linux Kernel. Vendors: Linux.

Quick answers

Is CVE-2026-45476 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-45476 being exploited in the wild.
How severe is CVE-2026-45476?: High severity, with a CVSS score of 8.2, published 9 June 2026.
Which products and versions are affected?: Linux Linux Kernel MANA Driver.
Is there a fix for CVE-2026-45476?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-45476 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-45476?: Check whether you run Linux Kernel. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A use-after-free (UAF) vulnerability exists within the Linux MANA (Microsoft Azure Network Adapter) driver, identified as CWE-416. The flaw is triggered when the driver incorrectly manages memory references, allowing an attacker to access or manipulate memory after it has been freed. This is a local attack requiring high privileges (PR:H) but no user interaction. Successful exploitation allows the attacker to escape restricted environments or elevate privileges to the kernel level, potentially leading to a full system compromise. The vulnerability is tracked under CVE-2026-45476 and was reported by Microsoft.

Affected products

Linux Linux Kernel MANA Driver

Timeline

2026-06-09: disclosed: Initial disclosure by Microsoft and NVD publication.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45476

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