Publisher CVE-2024-38226

HIGH

Protection Mechanism Failure (CWE-693)

2024-09-10 secure@microsoft.com

Authentication Bypass Microsoft Office Long Term Servicing Channel Publisher Office 2019

7.3

CVSS 3.1 · Vendor: microsoft

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Vulnerability Assessment

Weakness	CWE CWE-693 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V15 - Secure Coding and Architecture Protection mechanism completeness
Impact	CVSS score of 7.3 (HIGH). Attack characteristics: local attack vector, low complexity, low privileges required, user interaction required.
Exploit ScenarioDerived	Successful exploitation could compromise the high-severity affected system.

Act Now Prioritize within 24-48h. Why: In CISA KEV with patch available.

Exploited in the wild (CISA KEV) Patch available 2.7% exploitation probability (EPSS)

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AnalysisAI

Microsoft Publisher Security Feature Bypass Vulnerability. Rated high severity (CVSS 7.3), this vulnerability is 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.

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Technical ContextAI · show details

This vulnerability is classified under CWE-693. Affected products include: Microsoft Office 2019, Microsoft Office Long Term Servicing Channel, Microsoft Publisher.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (microsoft) PRIMARY 7.3 HIGH

AV:L/AC:L/PR:L/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

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

2

Added to CISA KEV

Jul 14, 2026 - 04:22 CISA

CVE Published

Sep 10, 2024 - 17:15 cve.org

HIGH 7.3

DescriptionCVE.org

Microsoft Publisher Security Feature Bypass Vulnerability

Threat Intelligence Overview

EPSS Score

2.7%

Top 16% exploitable

Data Quality

4 sources

Confidence: Medium

CISA KEV

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 Yes

Public POC No

EPSS 2.7%

Patch available Yes

Active threat Yes

Deciding rule

In CISA KEV with patch available

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

Out-of-Cycle

Exploitation· derived

Active

System Exposure· derived

Small

Automatable· derived

No

Human Impact· derived

High

Priority Score

89

Low Medium High Critical

KEV: +50

EPSS: +3

CVSS: +36

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x64:*

cpe:2.3:a:microsoft:office_2019:-:*:*:*:*:*:x86:*

cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:x64:*

cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:x86:*

cpe:2.3:a:microsoft:publisher:2016:*:*:*:*:*:x64:*

cpe:2.3:a:microsoft:publisher:2016:*:*:*:*:*:x86:*

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Microsoft Publisher 2003 SP3 allows remote attackers to execute arbitrary code via a crafted Publisher file that trigger

CVE-2013-1329 CRITICAL Emergency

Integer signedness error in Microsoft Publisher 2003 SP3 allows remote attackers to execute arbitrary code via a crafted

CVE-2013-1328 CRITICAL Emergency

Microsoft Publisher 2003 SP3, 2007 SP3, and 2010 SP1 allows remote attackers to execute arbitrary code via a crafted Pub

CVE-2013-1327 CRITICAL Emergency

Integer signedness error in Microsoft Publisher 2003 SP3 allows remote attackers to execute arbitrary code via a crafted

CVE-2013-1316 CRITICAL Emergency

Microsoft Publisher 2003 SP3 does not properly validate the size of an unspecified array, which allows remote attackers

CVE-2013-1323 CRITICAL Emergency

Microsoft Publisher 2003 SP3 does not properly handle NULL values for unspecified data items, which allows remote attack

CVE-2013-1321 CRITICAL Emergency

Microsoft Publisher 2003 SP3 does not properly check the data type of an unspecified return value, which allows remote a

CVE-2016-7289 HIGH Act Now

Microsoft Publisher 2010 SP2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corr

Same weakness CWE-693 – Protection Mechanism Failure

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CVE-2013-2465 CRITICAL POC

CVE-2024-21412 HIGH POC

CVE-2019-1003030 CRITICAL POC

CVE-2013-0431 LOW POC

CVE-2025-40536 HIGH POC

CVE-2024-38217 MEDIUM POC

CVE-2026-21513 HIGH

CVE-2026-21510 HIGH POC

Same technique Authentication Bypass

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CVE-2015-3306 CRITICAL POC

CVE-2023-22515 CRITICAL POC

CVE-2012-4681 CRITICAL POC

CVE-2011-3544 CRITICAL POC

CVE-2022-40684 CRITICAL POC

CVE-2025-61882 CRITICAL POC

CVE-2024-0012 CRITICAL POC

References

Advisories & patches

PATCH https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38226 REF https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-38226

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