What is the CVSS score of CVE-2023-25756?

CVE-2023-25756 has a CVSS 3.1 base score of 8.0 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

Core I5 9400F Firmware CVE-2023-25756

HIGH

Out-of-bounds Read (CWE-125)

2023-11-14 secure@intel.com

8.0

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-125 ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, read limits MITRE ATT&CK 1 technique across 1 tactic: Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 8.0 (HIGH). Attack characteristics: adjacent network attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to read data from memory outside the intended buffer boundaries.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAI

Out-of-bounds read in the BIOS firmware for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via adjacent access. Rated high severity (CVSS 8.0), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. Out-of-bounds read in the BIOS firmware for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via adjacent access. Affected products include: Intel Atom X6200Fe Firmware, Intel Atom X6211E Firmware, Intel Atom X6212Re Firmware, Intel Atom X6413E Firmware, Intel Atom X6414Re Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.0 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Out-of-bounds read in the BIOS firmware for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via adjacent access.

Threat Intelligence Overview

EPSS Score

0.4%

Top 68% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.4%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Controlled

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +40

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:o:intel:atom_x6200fe_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:atom_x6211e_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:atom_x6212re_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:atom_x6413e_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:atom_x6414re_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:atom_x6425e_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:atom_x6425re_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:atom_x6427fe_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1000m_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1005m_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1007u_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1017u_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1019y_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1020e_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1020m_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1037u_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_1047ue_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_2000e_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_2002e_firmware:-:*:*:*:*:*:*:*

cpe:2.3:o:intel:celeron_2950m_firmware:-:*:*:*:*:*:*:*

+ 609 more

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References

Advisories & patches

ADVISORY https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00924.html REF https://security.netapp.com/advisory/ntap-20231221-0008/

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GitHub PoC

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