CVE-2025-29979

HIGH EPSS 43.6%
Published May 13, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
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Published May 13, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
43.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-122
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 8

VendorProductVersionRange
microsoft365_apps*any
microsoftexcel2016any
microsoftoffice2019any
microsoftoffice_long_term_servicing_channel2021any
microsoftoffice_long_term_servicing_channel2021any
microsoftoffice_long_term_servicing_channel2024any
microsoftoffice_long_term_servicing_channel2024any
microsoftoffice_online_server* <16.0.10417.20010

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29979
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.