SecOps SignalSecurity Intelligence Workspace
Loading collection status
Vulnerabilities/CVE-2024-38226Public Intelligence Dossier
Source: microsoft · Limited verification•Last verified: •Collection Degraded
CVE-2024-38226ListedHIGH (raw)CVSS 7.3CWE-693

Microsoft Publisher Security Feature Bypass Vulnerability

Published: 10 Sept 2024•Last updated: 10 Aug 2026, 09:49 PM IST•Source identifier: secure@microsoft.com
Dossier completeness: source-provided sections 3 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Listed
Added10 Sept 2024
Due01 Oct 2024
RansomwareUnknown
CVSS score
7.3HIGH (raw)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Metric sourcesecure@microsoft.com
EPSS probability
2.7%0.027
Percentile86th
Weakness type
CWE-693
NVD-CWE-noinfo
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

Microsoft Publisher Security Feature Bypass Vulnerability

SOC priority

Immediate Attention

Actively exploited (source statement)

Yes

Publicly disclosed

Unknown

Risk basis: CISA KEV exploitation signal; Microsoft or Microsoft-managed product relevance; HIGH severity; Known exploitation signal from CISA KEV or ransomware metadata; Source-confirmed exploitation or CISA KEV/ransomware metadata

Affected Products & Remediation

3 source-backed products
Affected products and versions (source)
  • microsoft office 2019 · version range not provided by source · NVD CPE · Source
  • microsoft office long term servicing channel · 2021 · NVD CPE · Source
  • microsoft publisher · 2016 · NVD CPE · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

  • CISA KEV: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Listed
Exploited (source statement)
Yes
Publicly disclosed (source)
Unknown

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched local-access-review (CVSS AV:L, CVSS PR:L)

Exposure

  1. Identify hosts reporting this CVE, prioritising shared or multi-user systems.Telemetry: DeviceTvmSoftwareVulnerabilities · A local, low-privilege vector matters most where untrusted users can run code. · Rule local-access-review

Exploitation evidence

  1. Review source-stated impact and relevant application errors on affected hosts; local access alone does not establish privilege escalation.Telemetry: DeviceProcessEvents · The vector establishes local access and low privileges only. Confirm the impact from the advisory before choosing a specific hunt. · Rule local-access-review

Response

  1. Confirm the source-stated update on affected hosts.Telemetry: DeviceTvmSoftwareVulnerabilities · Host inventory can verify remediation. · Rule local-access-review

CISA KEV Record

Catalog entry
10 Sept 2024
Required action due
01 Oct 2024
Known ransomware use
Unknown

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Change History & Source Data

— No recorded material change

CNA / source
secure@microsoft.com
Record status · verification
UPDATED · Microsoft primary source linked; CISA KEV confirmed
CPE
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:*

Evidence & Provenance

4 public sources
CISA KEV CatalogAdded 2024-09-10msrc.microsoft.comSource recordnvd.nist.govSource recordcisa.govSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2024-38226
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2024-38226
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2024-38226"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Open KQL Library

Looking up related community queries…

Loading related intelligence

Correlated briefings

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.