How severe is CVE-1999-0098?

CVE-1999-0098 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-1999-0098 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0098?

CVE-1999-0098 primarily affects Apple Appleshare. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0098?

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

When was CVE-1999-0098 published?

CVE-1999-0098 was published on 1998-04-01 and last updated on 2026-06-16.

CVE-1999-0098

CVE-1999-0098 is a critical-severity vulnerability in Apple Appleshare with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Appleshare
Published: 1998-04-01
Last modified: 2026-06-16

Description

Buffer overflow in SMTP HELO command in Sendmail allows a remote attacker to hide activities.

Frequently asked questions

What is CVE-1999-0098?: Buffer overflow in SMTP HELO command in Sendmail allows a remote attacker to hide activities.
How severe is CVE-1999-0098?: CVE-1999-0098 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-1999-0098 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0098?: CVE-1999-0098 primarily affects Apple Appleshare. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0098?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-1999-0098 published?: CVE-1999-0098 was published on 1998-04-01 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0098

Affected products (3)

cpe:2.3:a:apple:appleshare:-:*:*:ja:*:*:*:*
cpe:2.3:a:pmail:mercury_mail_server:-:*:*:*:*:*:*:*
cpe:2.3:a:seattlelab:slmail:2.6:*:*:*:*:*:*:*

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