Which products and versions are affected by CVE-2003-0714?

Affected: Exchange Server (Microsoft) versions 2000, 2000-sp1, 2000-sp2, 2000-sp3, 5.5, 5.5-sp1, 5.5-sp2, 5.5-sp3. The full list is in the CVE brief.

Is CVE-2003-0714 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2003-0714 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2003-0714?

Public exploit code is available.

Is there a fix for CVE-2003-0714?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2003-0714 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2003-0714

HighPublic exploit

The Internet Mail Service in Exchange Server 5.5 and Exchange 2000 allows remote attackers to cause a denial of service (memory exhaustion) by directly connecting to the SMTP service and sending a certain extended verb request, possibly triggering a buffer overflow in Exchange…

Published Nov 17, 2003 · Updated Apr 15, 2026

Key Facts

Patch immediately

CVE-2003-0714 is a high-severity vulnerability (CVSS 7.5 v2) affecting Exchange Server (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 78% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

7.5

AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS (30-day exploit likelihood)

78%

Higher than 99.5% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2003-0714 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

9 affected entries in total

Product	Affected versions	Fixed in
Exchange ServerMicrosoft	2000, 2000-sp1, 2000-sp2, 2000-sp3, 5.5, 5.5-sp1, 5.5-sp2, 5.5-sp3	n/a

Timeline

Publicly disclosed
Nov 17, 2003
Last updated
Apr 15, 2026

Weakness Type

CWE-400 Uncontrolled Resource Consumption

References

advisory20031022 MS03-046 Microsoft Exchange 2000 Heap Overflow
advisoryCA-2003-27
patchMS03-046
patchVU#422156
patch8838

3 more references in the full CVE brief

FAQ

Common Questions.

The Internet Mail Service in Exchange Server 5.5 and Exchange 2000 allows remote attackers to cause a denial of service (memory exhaustion) by directly connecting to the SMTP service and sending a certain extended verb request, possibly triggering a buffer overflow in Exchange 2000.
Affected: Exchange Server (Microsoft) versions 2000, 2000-sp1, 2000-sp2, 2000-sp3, 5.5, 5.5-sp1, 5.5-sp2, 5.5-sp3. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2003-0714 Running On Your Attack Surface?

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