Content spoofing via undisclosed input-validation flaw
Published Apr 9, 2024 · Updated May 3, 2025
Improper input validation in Microsoft Outlook for Windows before 1.2023.0322.0100 allows remote attackers to spoof content. Microsoft has not published the affected component or the wrong operation performed on attacker-controlled input. A user must interact with attacker-supplied content, but the resulting data exposure or falsification outcome is not publicly described.
Summary
What happened
Improper input validation in Microsoft Outlook for Windows before 1.2023.0322.0100 allows remote attackers to spoof content. Microsoft has not published the affected component or the wrong operation performed on attacker-controlled input. A user must interact with attacker-supplied content, but the resulting data exposure or falsification outcome is not publicly described.
The record
- CVE
- CVE-2024-20670
- Published
- Apr 9, 2024
- Updated
- May 3, 2025
- Vendor
- Microsoft
- Product
- Microsoft Outlook for Windows
- Classifications
- CWE-20
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 9, 2024CVE publishedPublication date reported by the CVE source.
- May 3, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0 <1.2023.0322.0100
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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