How severe is CVE-2002-1255?

CVE-2002-1255 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2002-1255 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-1255?

CVE-2002-1255 primarily affects Microsoft Outlook. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-1255?

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

When was CVE-2002-1255 published?

CVE-2002-1255 was published on 2002-12-18 and last updated on 2026-06-16.

CVE-2002-1255

CVE-2002-1255 is a medium-severity vulnerability in Microsoft Outlook with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 14% 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: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Outlook
Published: 2002-12-18
Last modified: 2026-06-16

Description

Microsoft Outlook 2002 allows remote attackers to cause a denial of service (repeated failure) via an email message with a certain invalid header field that is accessed using POP3, IMAP, or WebDAV, aka "E-mail Header Processing Flaw Could Cause Outlook 2002 to Fail."

Frequently asked questions

What is CVE-2002-1255?: Microsoft Outlook 2002 allows remote attackers to cause a denial of service (repeated failure) via an email message with a certain invalid header field that is accessed using POP3, IMAP, or WebDAV, aka "E-mail Header Processing Flaw Could Cause Outlook 2002 to Fail."
How severe is CVE-2002-1255?: CVE-2002-1255 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2002-1255 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-1255?: CVE-2002-1255 primarily affects Microsoft Outlook. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-1255?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2002-1255 published?: CVE-2002-1255 was published on 2002-12-18 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:microsoft:outlook:2002:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook:2002:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook:2002:sp2:*:*:*:*:*:*

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