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CVE-2020-17144Microsoft Exchange Remote Code Execution Vulnerability

Microsoft Exchange Remote Code Execution Vulnerability

8.8 HIGHEPSS 36.51%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 02:58 UTC

OverviewCVSS details

8.8HIGHCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Dec 10, 2020
Assigner: microsoft

Affected

Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 31 (Microsoft)

Versions: before publication
Fixed in: publication

Exploitation

Public exploit: None listed
CISA KEV: Listed · Nov 3, 2021
KEV due date: May 3, 2022
Ransomware use: Unknown
SSVC: Exploitation active · Automatable yes · Impact total

EPSS · FIRST, scored Nov 7

36.51%chance of exploitation in 30 days

Higher than 98.50% of CVEs

CVSS 3.1 · NVD

8.8High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 3.1 · microsoft (CNA)

8.4High

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: High
User interaction: Required
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 3.1 · microsoft (CNA)

8.4High

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

Attack vector: Network
Attack complexity: Low
Privileges required: High
User interaction: Required
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

6.0Medium

AV:N/AC:M/Au:S/C:P/I:P/A:P

Attack vector: Network
Attack complexity: Medium
Authentication: Single
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

NVD status: Analyzed

Overview Affected Products References

Overview

Severity

Score	Severity	Version	Vector String
8.8	HIGH	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.4	HIGH	3.1microsoft (CNA)	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
8.4	HIGH	3.1microsoft (CNA)	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
6.0	MEDIUM	2.0NVD	AV:N/AC:M/Au:S/C:P/I:P/A:P

CISA required action

⚡ Known exploited · remediation due May 3, 2022

Apply updates per vendor instructions.

Details

CVE ID: CVE-2020-17144
Status: Analyzed
Assigner (CNA): microsoft
Published: Dec 10, 2020
Last modified: 2026-06-17 02:58 UTC
Weaknesses: CWE-502

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 09:39 UTC.