Microsoft Office out-of-bounds

Summaryinfo

A vulnerability was found in Microsoft Office. It has been declared as problematic. This affects an unknown function. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2026-55023. 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 (version now known). Affected is some unknown processing. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality. CVE summarizes:

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

The advisory is shared for download at msrc.microsoft.com. This vulnerability is traded as CVE-2026-55023 since 06/16/2026. The exploitability is told to be easy. The attack needs to be approached locally. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/14/2026).

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Office Suite Software

Vendor

• Microsoft

Name

• Office

License

• commercial

Website

• Vendor: https://www.microsoft.com/

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Once again VulDB remains the best source for vulnerability data.

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