Microsoft Office Word input validation

Summaryinfo

A vulnerability marked as problematic has been reported in Microsoft Office. This impacts an unknown function of the component Word. Performing a manipulation results in input validation. This vulnerability is cataloged as CVE-2026-70319. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Microsoft Office (the affected version is unknown). This affects an unknown code of the component Word. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality. The summary by CVE is:

Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

The advisory is shared at msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2026-70319 since 08/04/2026. The exploitability is told to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/11/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Office Suite Software

Vendor

• Microsoft

Name

• Office

License

• commercial

Website

• Vendor: https://www.microsoft.com/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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