CVE-2007-0039
The Exchange Collaboration Data Objects (EXCDO) functionality in Microsoft Exchange Server 2000 SP3, 2003 SP1 and SP2, and 2007 allows remote attackers to cause a denial of service (crash) via an Internet Calendar (iCal) file containing multiple X-MICROSOFT-CDO-MODPROPS (MODPROPS) properties in which the second MODPROPS is longer than the first, which triggers a NULL pointer dereference and an unhandled exception.
Key facts
- CVSS score
- 7.8 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C- Weakness (CWE)
- CWE-476
- EPSS score
- 44.6% (99th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2007-0043)
- Published
- May 8, 2007
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2007-0043 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- microsoft / exchange server
- microsoft / exchange server
- microsoft / exchange server
- microsoft / exchange server
References
- http://lists.grok.org.uk/pipermail/full-disclosure/2007-May/063232.html(Mailing List, Third Party Advisory)
- http://secunia.com/advisories/25183(Third Party Advisory)
- http://www.determina.com/security.research/vulnerabilities/exchange-ical-modprops.html(Broken Link)
- http://www.osvdb.org/34390(Broken Link)
- http://www.securityfocus.com/archive/1/468047/100/0/threaded(Third Party Advisory, VDB Entry)
- http://www.securityfocus.com/archive/1/468871/100/200/threaded(Third Party Advisory, VDB Entry)
- http://www.securityfocus.com/bid/23808(Third Party Advisory, VDB Entry)
- http://www.securitytracker.com/id?1018015(Third Party Advisory, VDB Entry)
- http://www.us-cert.gov/cas/techalerts/TA07-128A.html(Third Party Advisory, US Government Resource)
- http://www.vupen.com/english/advisories/2007/1711(Permissions Required)
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-026(Patch, Vendor Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33888(Third Party Advisory, VDB Entry)
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1593(Third Party Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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