Microsoft Outlook Improper Input Validation Vulnerability

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Summary

CVECVE-2024-21413
StatePUBLISHED
AssignerUnknown
Source PriorityEnrichment-only fallback
Published2025-02-06 00:00:00 UTC
Updated2026-04-02 17:47:12 UTC
DescriptionMicrosoft Outlook contains an improper input validation vulnerability that allows for remote code execution. Successful exploitation of this vulnerability would allow an attacker to bypass the Office Protected View and open in editing mode rather than protected mode.

Risk And Classification

EPSS: 0.929620000 probability, percentile 0.997770000 (date 2026-04-03)

CISA KEV: Listed on 2025-02-06; due 2025-02-27; ransomware use Unknown

CISA Known Exploited Vulnerability

VendorMicrosoft
ProductOffice Outlook
NameMicrosoft Outlook Improper Input Validation Vulnerability
Required ActionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Noteshttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21413 ; https://nvd.nist.gov/vuln/detail/CVE-2024-21413

References

ReferenceSourceLinkTags
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Legacy QID Mappings

  • 110458 Microsoft Office Remote Code Execution (RCE) Vulnerability for February 2024
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