CVE-1999-1055: n/a vulnerability

CVE-1999-1055: Microsoft Excel 97 does not warn the user before executing worksheet functions, which could allow attackers...

Microsoft Excel 97 does not warn the user before executing worksheet functions, which could allow attackers to execute arbitrary commands by using the CALL function to execute a malicious DLL, aka the Excel "CALL Vulnerability."

UnknownCVSS not scoredNot KEV-listedUpdatedAug 1, 2024, 17:02 UTC (UTC+00:00)

Security readout for executives and security teams

Microsoft Excel 97 may run worksheet functions without warning, allowing a malicious spreadsheet to call a malicious DLL and execute arbitrary commands. The source bundle does not provide CVSS, confirmed exploitation, or detailed patch status. Exposure is most likely limited to environments still using Microsoft Excel 97 or handling legacy Excel files on systems where malicious DLL execution is possible. Treat as low priority unless legacy Excel 97 is present. If found, prioritize isolation or replacement because arbitrary command execution can affect endpoint integrity. Mitigation focus: Inventory systems for Microsoft Excel 97 or legacy Office installations.; Review Microsoft MS98-018 and apply vendor-recommended updates or controls.; Restrict untrusted Excel files from legacy systems..

Prepared: Jul 11, 2026, 13:00 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 9, 2002, 05:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
excel-call(1737)CVE reference · vdb-entry, x_refsource_XF
MS98-018CVE reference · vendor-advisory, x_refsource_MS

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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