CVE-2007-0039

HIGHCVSS v2 · 7.87.8—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.8 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 44.6% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Elevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 45%CVSS v2: 7.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v2.0 (legacy)
7.8HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.8(low)
EG Risk
57(Track)
EG Risk 57/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation45% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
45%
EPSS %ILE
99%
KEV
Not listed

Published

May 8, 2007

Last Modified

April 23, 2026

References (26)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 13:31 UTCEG score recompute▲ 7.80
  2. 2026-07-25 14:11 UTCEPSS rescore
  3. 2026-07-24 14:11 UTCEPSS rescore
  4. 2026-07-23 00:52 UTCEG score recompute
  5. 2026-07-23 00:31 UTCEG score recompute▼ 2.40
  6. 2026-07-22 23:56 UTCEG score recompute▲ 2.40
  7. 2026-07-22 21:36 UTCEG score recompute
  8. 2026-07-22 14:03 UTCEPSS rescore
  9. 2026-07-21 15:19 UTCEPSS rescore
  10. 2026-07-20 17:02 UTCEPSS rescore
  11. 2026-07-15 16:54 UTCEPSS rescore
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  21. 2026-06-30 23:18 UTCEPSS rescore
  22. 2026-06-28 04:52 UTCEPSS rescore
  23. 2026-06-25 13:46 UTCEPSS rescore
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  25. 2026-06-24 14:02 UTCEPSS rescore
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  1. 2026-06-24 14:01 UTCEPSS rescore
  2. 2026-06-23 21:29 UTCEPSS rescore
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  4. 2026-06-21 01:56 UTCEPSS rescore
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  7. 2026-06-18 17:49 UTCEPSS rescore
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  14. 2026-06-14 23:13 UTCEPSS rescore
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  17. 2026-06-12 23:08 UTCEPSS rescore
  18. 2026-06-06 13:44 UTCEPSS rescore
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  20. 2026-06-05 22:44 UTCEPSS rescore
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  22. 2026-06-05 06:07 UTCEPSS rescore
  23. 2026-06-04 13:09 UTCEPSS rescore
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  25. 2026-06-02 20:10 UTCEPSS rescore
  26. 2026-06-02 20:10 UTCEPSS rescore
  27. 2026-05-31 22:28 UTCEPSS rescore
  28. 2026-05-31 22:28 UTCEPSS rescore
  29. 2026-05-31 02:52 UTCEG score recompute
  30. 2026-05-31 02:52 UTCGHSA enrichment
  31. 2026-05-31 00:13 UTCEPSS rescore
  32. 2026-05-31 00:13 UTCEPSS rescore
  33. 2026-05-29 13:40 UTCEPSS rescore
  34. 2026-05-28 13:42 UTCEPSS rescore
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  36. 2026-05-27 13:37 UTCEPSS rescore
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  38. 2026-05-24 16:42 UTCEPSS rescore
  39. 2026-05-22 21:15 UTCEPSS rescore
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  42. 2026-05-21 22:38 UTCEPSS rescore
  43. 2026-05-20 22:36 UTCEPSS rescore
  44. 2026-05-20 11:20 UTCEPSS rescore
  45. 2026-05-20 11:20 UTCEPSS rescore
  46. 2026-05-18 21:29 UTCEPSS rescore
  47. 2026-05-18 21:29 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2007-0039?
CVE-2007-0039 is a high vulnerability published on May 8, 2007. 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…
When was CVE-2007-0039 disclosed?
CVE-2007-0039 was first published in the National Vulnerability Database on May 8, 2007, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2007-0039 actively exploited?
CVE-2007-0039 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45% probability of exploitation in the next 30 days, which ranks it in the top 1.4% of all scored CVEs.
How do I remediate CVE-2007-0039?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2007-0039, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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