CVE-2023-32249

Linux Kernel vulnerability

9.1 CRITICALEPSS 0.35%

Published16 Aug 2025

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: not allow guest user on multichannel This patch return STATUS_NOT_SUPPORTED if binding session is guest.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Linux Kernel≥ 5.15 < 5.15.112 · ≥ 5.16 < 6.1.28 · ≥ 6.2 < 6.2.15 · ≥ 6.3 < 6.3.2

Remediation

Fixed in

Linux Kernel≥ 5.15.112

Patch & vendor advisories

References

Frequently asked

Is CVE-2023-32249 being actively exploited?

CVE-2023-32249 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.35%.

How severe is CVE-2023-32249?

CVE-2023-32249 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.35% probability of exploitation.

Which products are affected by CVE-2023-32249?

Affected products include Linux Kernel.

How do I fix CVE-2023-32249?

Upgrade affected software to a fixed version, for example Linux Kernel 5.15.112 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-32249 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.