How severe is CVE-2023-4857?

CVE-2023-4857 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-4857 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-4857?

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

Does CVE-2023-4857 have an EU (EUVD) identifier?

Yes. CVE-2023-4857 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54697.

When was CVE-2023-4857 published?

CVE-2023-4857 was published on 2024-04-15 and last updated on 2026-06-17.

CVE-2023-4857

CVE-2023-4857 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-306.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-54697
Weakness: CWE-306
Published: 2024-04-15
Last modified: 2026-06-17

Description

An authentication bypass vulnerability was identified in SMM/SMM2 and FPC that could allow an authenticated user to execute certain IPMI calls that could lead to exposure of limited system information.

Frequently asked questions

What is CVE-2023-4857?: An authentication bypass vulnerability was identified in SMM/SMM2 and FPC that could allow an authenticated user to execute certain IPMI calls that could lead to exposure of limited system information.
How severe is CVE-2023-4857?: CVE-2023-4857 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-4857 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-4857?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-4857 have an EU (EUVD) identifier?: Yes. CVE-2023-4857 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54697.
When was CVE-2023-4857 published?: CVE-2023-4857 was published on 2024-04-15 and last updated on 2026-06-17.

References

https://support.lenovo.com/us/en/product_security/LEN-140420

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities

CVE-2026-54309 — Critical (CVSS 10.0): n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP…
CVE-2026-50242 — Critical (CVSS 10.0): In JetBrains Hub before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429…
CVE-2026-49257 — Critical (CVSS 10.0): mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1…
CVE-2026-46846 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46803 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46800 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites).…

Browse all CWE-306 (Missing Authentication for Critical Function) vulnerabilities →