Microsoft Office out-of-bounds

Summaryinfo

A vulnerability was found in Microsoft Office. It has been declared as problematic. This impacts an unknown function. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2026-55054. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Microsoft Office (version now known) and classified as problematic. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. CVE summarizes:

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

The advisory is shared for download at msrc.microsoft.com. This vulnerability is handled as CVE-2026-55054 since 06/16/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. 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 $5k-$25k (estimation calculated on 07/15/2026).

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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