How severe is CVE-1999-0284?

CVE-1999-0284 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-0284 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0284?

CVE-1999-0284 primarily affects Ibm Lotus Domino Mail 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-1999-0284?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0284 published?

CVE-1999-0284 was published on 1998-01-01 and last updated on 2026-06-16.

CVE-1999-0284

CVE-1999-0284 is a high-severity vulnerability in Ibm Lotus Domino Mail Server with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Ibm Lotus Domino Mail Server
Published: 1998-01-01
Last modified: 2026-06-16

Description

Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.

Frequently asked questions

What is CVE-1999-0284?: Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.
How severe is CVE-1999-0284?: CVE-1999-0284 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-0284 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0284?: CVE-1999-0284 primarily affects Ibm Lotus Domino Mail 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-1999-0284?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0284 published?: CVE-1999-0284 was published on 1998-01-01 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0284

Affected products (3)

cpe:2.3:a:ibm:lotus_domino_mail_server:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:4.0:-:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:5.0:-:*:*:*:*:*:*

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