Known exploited · Microsoft
CVE-2017-0199: Microsoft Office and WordPad Remote Code Execution Vulnerability
What it is
Microsoft Office and WordPad contain an unspecified vulnerability due to the way the applications parse specially crafted files. Successful exploitation allows for remote code execution.
- Vendor
- Microsoft
- Product
- Office and WordPad
- Added to KEV
- November 3, 2021
- CISA due date
- May 3, 2022
- Ransomware use
- Known
- Weakness
- Not mapped by CISA
What CISA requires
Apply updates per vendor instructions.
Forensic triage
No
What to do now
- Find every instance of Office and WordPad you run, including the forgotten ones, and check its version against the vendor advisory.
- Apply the vendor's fix or mitigation, before May 3, 2022 if you are bound by CISA's deadline, sooner if it faces the internet.
- Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
References
H2 Security
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Start freeSource: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.