How severe is CVE-1999-1504?

CVE-1999-1504 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-1999-1504 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1504?

CVE-1999-1504 affects Stalker Stalker Internet Mail Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-1504?

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

When was CVE-1999-1504 published?

CVE-1999-1504 was published on 1998-04-08 and last updated on 2026-06-16.

CVE-1999-1504

CVE-1999-1504 is a medium-severity vulnerability in Stalker Stalker Internet Mail Server with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Stalker Stalker Internet Mail Server
Published: 1998-04-08
Last modified: 2026-06-16

Description

Stalker Internet Mail Server 1.6 allows a remote attacker to cause a denial of service (crash) via a long HELO command.

Frequently asked questions

What is CVE-1999-1504?: Stalker Internet Mail Server 1.6 allows a remote attacker to cause a denial of service (crash) via a long HELO command.
How severe is CVE-1999-1504?: CVE-1999-1504 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-1999-1504 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1504?: CVE-1999-1504 affects Stalker Stalker Internet Mail Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1504?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-1504 published?: CVE-1999-1504 was published on 1998-04-08 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:stalker:stalker_internet_mail_server:1.6:*:*:*:*:*:*:*