The Exchange Collaboration Data Objects (EXCDO) functionality in Microsoft Exchange…
Priority MEDIUM 63CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
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.
Why it matters now
EPSS 0.44569 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:exchange_server:2000:sp3:*:*:*:*:*:* | 2000 sp3 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2003:sp1:*:*:*:*:*:* | 2003 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2003:sp2:*:*:*:*:*:* | 2003 sp2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2007:-:*:*:*:*:*:* | 2007 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:exchange_server:2000:sp3:*:*:*:*:*:* Versions 2000 sp3 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2003:sp1:*:*:*:*:*:* Versions 2003 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2003:sp2:*:*:*:*:*:* Versions 2003 sp2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2007:-:*:*:*:*:*:* Versions 2007 Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2007-0039
- 2026-10-03 Alias added: GHSA-wphx-9m7p-vhwc
References
More Microsoft Exchange Server vulnerabilities
- TI-2024-14170 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2022-19610 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13547 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13502 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-08465 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2023-07929 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2007-0039 · CVE Program
- CVE-2007-0039 · NVD
- FIRST EPSS
- GHSA-wphx-9m7p-vhwc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences