HIGH
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
Published May 8, 2007
7.8
HIGHCVSS 2.0
EPSS 44.57%
Description
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.
Affected products
No data.
OR
- 2000
- 2003
- 2003
- 2007
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
7.8 HIGH NVD
AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
44.57% 0.44569
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.44569
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (27 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 44.57% (0.44569) | 98.73th | v5 (v2026.06.15) |
| Jun 15, 2026 | 44.57% (0.44569) | 98.60th | v5 (v2026.06.15) |
| May 16, 2026 | 38.35% (0.38347) | 97.28th | v4 (v2025.03.14) |
| May 15, 2026 | 39.59% (0.39595) | 97.35th | v4 (v2025.03.14) |
| May 13, 2026 | 38.35% (0.38347) | 97.28th | v4 (v2025.03.14) |
| Feb 16, 2026 | 39.59% (0.39595) | 97.20th | v4 (v2025.03.14) |
| Jan 1, 2026 | 41.95% (0.41946) | 97.32th | v4 (v2025.03.14) |
| Dec 26, 2025 | 38.35% (0.38347) | 97.09th | v4 (v2025.03.14) |
| Oct 28, 2025 | 41.55% (0.41551) | 97.24th | v4 (v2025.03.14) |
| Oct 27, 2025 | 37.96% (0.37959) | 97.05th | v4 (v2025.03.14) |
| Oct 1, 2025 | 41.55% (0.41551) | 97.33th | v4 (v2025.03.14) |
| Jul 30, 2025 | 37.96% (0.37959) | 97.07th | v4 (v2025.03.14) |
| Jun 2, 2025 | 40.93% (0.40928) | 97.22th | v4 (v2025.03.14) |
| Mar 30, 2025 | 36.56% (0.36560) | 96.80th | v4 (v2025.03.14) |
| Mar 29, 2025 | 28.02% (0.28020) | 94.40th | v4 (v2025.03.14) |
| Mar 17, 2025 | 36.56% (0.36560) | 96.77th | v4 (v2025.03.14) |
| Dec 17, 2024 | 20.55% (0.20555) | 96.37th | v3 (v2023.03.01) |
| Jul 3, 2024 | 23.09% (0.23095) | 96.58th | v3 (v2023.03.01) |
| Apr 18, 2024 | 24.96% (0.24959) | 96.60th | v3 (v2023.03.01) |
| Mar 11, 2024 | 25.08% (0.25084) | 96.54th | v3 (v2023.03.01) |
| Feb 2, 2024 | 13.33% (0.13334) | 95.09th | v3 (v2023.03.01) |
| Oct 10, 2023 | 11.86% (0.11863) | 94.68th | v3 (v2023.03.01) |
| Jun 20, 2023 | 8.37% (0.08368) | 93.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.09% (0.06087) | 92.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 23.04% (0.23038) | 96.67th | v2 (v2022.01.01) |
| Jul 17, 2022 | 23.04% (0.23038) | 96.60th | v2 (v2022.01.01) |
| Feb 4, 2022 | 23.04% (0.23038) | 94.54th | v2 (v2022.01.01) |
Weaknesses (1)
References (13)
- http://lists.grok.org.uk/pipermail/full-disclosure/2007-May/063232.html mailing-listx_refsource_FULLDISCMailing ListThird Party Advisory
- http://secunia.com/advisories/25183 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://www.determina.com/security.research/vulnerabilities/exchange-ical-modprops.html x_refsource_MISCBroken Link
- http://www.osvdb.org/34390 vdb-entryx_refsource_OSVDBBroken Link
- http://www.securityfocus.com/archive/1/468047/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/archive/1/468871/100/200/threaded vendor-advisoryx_refsource_HPThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/23808 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id?1018015 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.us-cert.gov/cas/techalerts/TA07-128A.html third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource
- http://www.vupen.com/english/advisories/2007/1711 vdb-entryx_refsource_VUPENPermissions Required
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-026 vendor-advisoryx_refsource_MSPatchVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33888 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1593 vdb-entrysignaturex_refsource_OVALThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published May 8, 2007
Updated Aug 7, 2024
Reserved Jan 3, 2007
Link CVE-2007-0039
CISA Vulnrichment
Updated n/a