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Vulnerabilities

Vulnerability · CVE-2005-1987

Buffer overflow in Collaboration Data Objects (CDO), as used in Microsoft Windows and Microsoft Exchange Server, allows remote attackers to execute arbitrary code when…

Published Oct 13, 2005 · catalog updated Jun 16, 2026 · exchange server

Last checked Nov 1, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2005-1987 is not in CISA KEV. FIRST estimates a 43.45% chance of exploitation in the next 30 days. Check whether you run exchange server.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
43.45%
Remediation
Advisory link
Affected products
cpe microsoft/exchange server · cpe microsoft/windows 2000 · cpe microsoft/windows server 2003

Buffer overflow in Collaboration Data Objects (CDO), as used in Microsoft Windows and Microsoft Exchange Server, allows remote attackers to execute arbitrary code when CDOSYS or CDOEX processes an e-mail message with a large header name, as demonstrated using the "Content-Type" string.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/exchange server2000
  • cpe microsoft/windows 2000version unspecified
  • cpe microsoft/windows server 2003r2
  • cpe microsoft/windows server 2003sp1

How to fix CVE-2005-1987

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    No version range is stored, so an installed version cannot be checked on this page.

  • Advisory

    Open the inventory_critical record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2005-1987 is not in CISA KEV. FIRST estimates a 43.45% chance of exploitation in the next 30 days. Check whether you run exchange server.

Which versions are affected?

Compare what you have installed with microsoft/exchange server 2000; microsoft/windows server 2003 r2; microsoft/windows server 2003 sp1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-120: Classic Buffer Overflow. EPSS 43.45%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Microsoft Exchange Server securityWindows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 13, 2005 · Monitored products — critical

    Detected

    Buffer overflow in Collaboration Data Objects (CDO), as used in Microsoft Windows and Microsoft Exchange Server, allows remote attackers to execute arbitrary code when CDOSYS or CDOEX processes an e-mail message with a large header name, as demonstrated using the "Content-Type" string.

  2. Jun 16, 2026 · Monitored products — critical

    Updated

    Buffer overflow in Collaboration Data Objects (CDO), as used in Microsoft Windows and Microsoft Exchange Server, allows remote attackers to execute arbitrary code when CDOSYS or CDOEX processes an e-mail message with a large header name, as demonstrated using the "Content-Type" string.

Sources

  • Monitored products — criticalVendor advisoryCVE-2005-1987

    Buffer overflow in Collaboration Data Objects (CDO), as used in Microsoft Windows and Microsoft Exchange Server, allows remote attackers to execute arbitrary code when CDOSYS or CDOEX processes an e-mail message with a large header name, as demonstrated using the "Content-Type" string.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Monitored products — criticalNov 1, 2026