CVE-2025-53759

HIGH
Published Aug 12, 2025 Modified Aug 15, 2025 CWE-908

Description

Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-908 CWE-908

Affected Products

Vendor Product
microsoft 365_apps
microsoft 365_apps
microsoft office
microsoft office
microsoft office_long_term_servicing_channel
microsoft office_long_term_servicing_channel
microsoft office_long_term_servicing_channel
microsoft office_long_term_servicing_channel
microsoft office_long_term_servicing_channel
microsoft office_long_term_servicing_channel
microsoft office_online_server

References

Frequently Asked Questions

What is CVE-2025-53759? +
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2025-53759? +
CVE-2025-53759 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2025-53759? +
CVE-2025-53759 affects products from microsoft, specifically: 365_apps, office, office_long_term_servicing_channel, office_online_server. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-53759? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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