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CVE-2007-0671 is a remote code execution vulnerability in Microsoft Excel affecting Excel 2000, Excel XP, Excel 2003, and Excel 2004 for Mac, and possibly additional Microsoft Office products. The flaw is triggered when Excel parses a specially crafted spreadsheet file, leading to improper memory access and allowing attacker-controlled code execution in the context of the user who opens the document. Public reporting describes the issue as unspecified at a granular technical level, but available advisory information characterizes it as a file-parsing memory corruption condition that was exploited in targeted zero-day attacks.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remote code execution vulnerability in Microsoft Office Excel (CVE-2007-0671).
A remote code execution vulnerability in Microsoft Office Excel, still being exploited in the wild as of 2025.
A remote code execution vulnerability in Microsoft Office Excel, first disclosed in 2007, that was added to the CISA KEV catalog in 2025 due to evidence of exploitation.
An unspecified vulnerability in Microsoft Excel 2000, XP, 2003, and 2004 for Mac that allows remote, user-assisted code execution, observed in zero-day attacks.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.