How severe is CVE-2023-31403?

CVE-2023-31403 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-31403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31403?

CVE-2023-31403 affects Sap Business One. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-31403?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-31403 published?

CVE-2023-31403 was published on 2023-11-14 and last updated on 2026-06-17.

CVE-2023-31403

CVE-2023-31403 is a critical-severity vulnerability in Sap Business One with a CVSS 3.x base score of 9.6. 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-863.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Sap Business One
Published: 2023-11-14
Last modified: 2026-06-17

Description

SAP Business One installation - version 10.0, does not perform proper authentication and authorization checks for SMB shared folder. As a result, any malicious user can read and write to the SMB shared folder. Additionally, the files in the folder can be executed or be used by the installation process leading to considerable impact on confidentiality, integrity and availability.

Frequently asked questions

What is CVE-2023-31403?: SAP Business One installation - version 10.0, does not perform proper authentication and authorization checks for SMB shared folder. As a result, any malicious user can read and write to the SMB shared folder. Additionally, the files in the folder can be executed or be used by the installation process leading to considerable impact on confidentiality, integrity and availability.
How severe is CVE-2023-31403?: CVE-2023-31403 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-31403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31403?: CVE-2023-31403 affects Sap Business One. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-31403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-31403 published?: CVE-2023-31403 was published on 2023-11-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sap:business_one:10.0:*:*:*:*:*:*:*

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