How severe is CVE-2000-0524?

CVE-2000-0524 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2000-0524 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0524?

CVE-2000-0524 primarily affects Microsoft Exchange Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0524?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2000-0524 published?

CVE-2000-0524 was published on 2000-06-05 and last updated on 2026-06-16.

CVE-2000-0524

CVE-2000-0524 is a medium-severity vulnerability in Microsoft Exchange Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Exchange Server
Published: 2000-06-05
Last modified: 2026-06-16

Description

Microsoft Outlook and Outlook Express allow remote attackers to cause a denial of service by sending email messages with blank fields such as BCC, Reply-To, Return-Path, or From.

Frequently asked questions

What is CVE-2000-0524?: Microsoft Outlook and Outlook Express allow remote attackers to cause a denial of service by sending email messages with blank fields such as BCC, Reply-To, Return-Path, or From.
How severe is CVE-2000-0524?: CVE-2000-0524 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2000-0524 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0524?: CVE-2000-0524 primarily affects Microsoft Exchange Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0524?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0524 published?: CVE-2000-0524 was published on 2000-06-05 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:microsoft:exchange_server:4.0:-:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:5.0:-:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook:97:*:*:*:*:*:*:*

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