Is CVE-2026-45972 actively exploited?

No active exploitation of CVE-2026-45972 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45972 be exploited remotely?

Yes. CVE-2026-45972 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-45972?

CVE-2026-45972 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2026-45972

CRITICAL

CVE-2026-45972

Published: May 27, 2026· Updated: May 30, 2026

9.8

CVSS v3.1

Official Description

In the Linux kernel, the following vulnerability has been resolved:

smb: client: fix potential UAF and double free in smb2_open_file()

Zero out @err_iov and @err_buftype before retrying SMB2_open() to

prevent an UAF bug if @data != NULL, otherwise a double free.

NVD Source

Technical Analysis

CVE-2026-45972 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.