What is the CVSS score of CVE-2020-17125?

CVE-2020-17125 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 3.3%.

Is there a patch available for CVE-2020-17125?

Yes, a patch is available for CVE-2020-17125. Update the affected software to the latest version immediately.

Excel CVE-2020-17125

HIGH

2020-12-10 secure@microsoft.com

RCE Microsoft 365 Apps Excel Office Office Online Server Office Web Apps

7.8

CVSS 3.1 · Vendor: microsoft

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Vulnerability Assessment

Impact	CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required.
Exploit ScenarioDerived	Successful exploitation could compromise the high-severity affected system.

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

Patch available 3.3% exploitation probability (EPSS)

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AnalysisAI

Microsoft Excel Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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

Affected products include: Microsoft 365 Apps, Microsoft Excel, Microsoft Office, Microsoft Office Online Server, Microsoft Office Web Apps.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (microsoft) PRIMARY 7.8 HIGH

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

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Microsoft Excel Remote Code Execution Vulnerability

Threat Intelligence Overview

EPSS Score

3.3%

Top 13% 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 3.3%

Patch available Yes

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: +3

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*

cpe:2.3:a:microsoft:excel:2010:sp1:*:*:*:*:*:*

cpe:2.3:a:microsoft:excel:2013:sp1:*:*:*:*:*:*

cpe:2.3:a:microsoft:excel:2013:sp1:*:*:rt:*:*:*

cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:*:*

cpe:2.3:a:microsoft:office:2019:*:*:*:*:-:*:*

cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:*

cpe:2.3:a:microsoft:office_web_apps:2013:sp1:*:*:*:*:*:*

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References

Advisories & patches

PATCH https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17125 REF https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-17125

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