How severe is CVE-2000-0637?

CVE-2000-0637 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-2000-0637 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0637?

CVE-2000-0637 primarily affects Microsoft Excel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0637?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2000-0637 published?

CVE-2000-0637 was published on 2000-07-26 and last updated on 2026-06-16.

CVE-2000-0637

CVE-2000-0637 is a medium-severity vulnerability in Microsoft Excel with a CVSS 2.0 base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.6)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Excel
Published: 2000-07-26
Last modified: 2026-06-16

Description

Microsoft Excel 97 and 2000 allows an attacker to execute arbitrary commands by specifying a malicious .dll using the Register.ID function, aka the "Excel REGISTER.ID Function" vulnerability.

Frequently asked questions

What is CVE-2000-0637?: Microsoft Excel 97 and 2000 allows an attacker to execute arbitrary commands by specifying a malicious .dll using the Register.ID function, aka the "Excel REGISTER.ID Function" vulnerability.
How severe is CVE-2000-0637?: CVE-2000-0637 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2000-0637 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0637?: CVE-2000-0637 primarily affects Microsoft Excel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0637?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0637 published?: CVE-2000-0637 was published on 2000-07-26 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:microsoft:excel:97:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:excel:2000:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Excel

CVE-2008-0081 — Critical (CVSS 9.8): Unspecified vulnerability in Microsoft Excel 2000 SP3 through 2003 SP2, Viewer 2003, and Office 2004 for Mac allows…
CVE-2015-6177 — Critical (CVSS 9.3): Microsoft Excel 2007 SP3, Office Compatibility Pack SP3, and Excel Viewer allow remote attackers to execute arbitrary…
CVE-2015-6122 — Critical (CVSS 9.3): Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel for Mac 2011, Office Compatibility Pack SP3, and Excel Viewer allow…
CVE-2015-6040 — Critical (CVSS 9.3): Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel for Mac 2011, Excel 2016 for Mac, Office Compatibility Pack SP3, and…
CVE-2015-6094 — Critical (CVSS 9.3): Microsoft Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Excel for Mac 2011, Excel 2016 for Mac, and…
CVE-2015-6038 — Critical (CVSS 9.3): Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Excel for Mac 2011, Excel 2016…

All CVEs affecting Microsoft Excel →