What is the CVSS score of CVE-2020-24525?

CVE-2020-24525 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Nuc 8 Mainstream G Kit Nuc8I7Inh Firmware CVE-2020-24525

HIGH

Incorrect Permission Assignment for Critical Resource (CWE-732)

2020-11-12 secure@intel.com

Privilege Escalation Intel Nuc 8 Mainstream G Kit Nuc8I7Inh Firmware Nuc 8 Mainstream G Kit Nuc8I5Inh Firmware Nuc 8 Mainstream G Mini Pc Nuc8I7Inh Firmware Nuc 8 Rugged Kit Nuc8Cchkr Firmware Nuc Board Nuc8Cchb Firmware Nuc 8 Mainstream G Mini Pc Nuc8I5Inh Firmware Nuc 8 Pro Board Nuc8I3Pnb Firmware Nuc 8 Pro Kit Nuc8I3Pnh Firmware Nuc 8 Pro Kit Nuc8I3Pnk Firmware Nuc 8 Pro Mini Pc Nuc8I3Pnk Firmware Nuc 9 Pro Kit Nuc9V7Qnx Firmware Nuc 9 Pro Kit Nuc9Vxqnx Firmware Nuc Board H27002 400 Firmware Nuc Board H27002 401 Firmware Nuc Board H27002 402 Firmware Nuc Board H27002 404 Firmware Nuc Board H27002 500 Firmware Nuc Kit H26998 401 Firmware Nuc Kit H26998 402 Firmware Nuc Kit H26998 403 Firmware Nuc Kit H26998 404 Firmware Nuc Kit H26998 405 Firmware Nuc Kit H26998 500 Firmware

7.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-732 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V13 - Configuration Permission assignment review
Impact	CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	A local attacker with access to the system could access resources due to misconfigured permissions.

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

No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAI

Insecure inherited permissions in firmware update tool for some Intel(R) NUCs may allow an authenticated user to potentially enable escalation of privilege via local access. Rated high severity (CVSS 7.8), 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. Review and restrict file/resource permissions, apply principle of least privilege.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as Incorrect Permission Assignment (CWE-732), which allows attackers to access resources due to misconfigured permissions. Insecure inherited permissions in firmware update tool for some Intel(R) NUCs may allow an authenticated user to potentially enable escalation of privilege via local access. Affected products include: Intel Nuc 8 Mainstream-G Kit Nuc8I5Inh Firmware, Intel Nuc 8 Mainstream-G Kit Nuc8I7Inh Firmware, Intel Nuc 8 Mainstream-G Mini Pc Nuc8I5Inh Firmware, Intel Nuc 8 Mainstream-G Mini Pc Nuc8I7Inh Firmware, Intel Nuc 8 Pro Board Nuc8I3Pnb Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

AV:L/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

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Insecure inherited permissions in firmware update tool for some Intel(R) NUCs may allow an authenticated user to potentially enable escalation of privilege via local access.

Threat Intelligence Overview

EPSS Score

0.3%

Top 79% 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 0.3%

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

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

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.

Affected Products (CPE)NVD

cpe:2.3:o:intel:nuc_8_mainstream-g_kit_nuc8i5inh_firmware:inwhl357.0036:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_8_mainstream-g_kit_nuc8i7inh_firmware:inwhl357.0036:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_8_mainstream-g_mini_pc_nuc8i5inh_firmware:inwhl357.0036:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_8_mainstream-g_mini_pc_nuc8i7inh_firmware:inwhl357.0036:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_8_pro_board_nuc8i3pnb_firmware:pnwhl357.0037:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_8_pro_kit_nuc8i3pnh_firmware:pnwhl357.0037:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_8_pro_kit_nuc8i3pnk_firmware:pnwhl357.0037:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_8_pro_mini_pc_nuc8i3pnk_firmware:pnwhl357.0037:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_8_rugged_kit_nuc8cchkr_firmware:chaplcel.0049:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_9_pro_kit_nuc9v7qnx_firmware:qncflx70.34:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_9_pro_kit_nuc9vxqnx_firmware:qncflx70.34:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_board_h27002-400_firmware:tybyt10h.86a:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_board_h27002-401_firmware:tybyt10h.86a:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_board_h27002-402_firmware:tybyt10h.86a:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_board_h27002-404_firmware:tybyt10h.86a:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_board_h27002-500_firmware:tybyt20h.86a:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_board_nuc8cchb_firmware:chaplcel.0049:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_kit_h26998-401_firmware:tybyt10h.86a:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_kit_h26998-402_firmware:tybyt10h.86a:*:*:*:*:*:*:*

cpe:2.3:o:intel:nuc_kit_h26998-403_firmware:tybyt10h.86a:*:*:*:*:*:*:*

+ 3 more

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References

Advisories & patches

ADVISORY https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00414 REF http://seclists.org/fulldisclosure/2020/Nov/26

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GitHub PoC

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