How severe is CVE-2023-31431?

CVE-2023-31431 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-31431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31431?

CVE-2023-31431 primarily affects Broadcom Brocade Fabric Operating System. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-31431?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-31431 published?

CVE-2023-31431 was published on 2023-08-02 and last updated on 2026-06-17.

CVE-2023-31431

CVE-2023-31431 is a medium-severity vulnerability in Broadcom Brocade Fabric Operating System with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Broadcom Brocade Fabric Operating System
Published: 2023-08-02
Last modified: 2026-06-17

Description

A buffer overflow vulnerability in “diagstatus” command in Brocade Fabric OS before Brocade Fabric v9.2.0 and v9.1.1c could allow an authenticated user to crash the Brocade Fabric OS switch leading to a denial of service.

Frequently asked questions

What is CVE-2023-31431?: A buffer overflow vulnerability in “diagstatus” command in Brocade Fabric OS before Brocade Fabric v9.2.0 and v9.1.1c could allow an authenticated user to crash the Brocade Fabric OS switch leading to a denial of service.
How severe is CVE-2023-31431?: CVE-2023-31431 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-31431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31431?: CVE-2023-31431 primarily affects Broadcom Brocade Fabric Operating System. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-31431?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-31431 published?: CVE-2023-31431 was published on 2023-08-02 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:broadcom:brocade_fabric_operating_system:*:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:brocade_fabric_operating_system:9.2.0:*:*:*:*:*:*:*

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