CVE-2000-0833

CVE-2000-0833 is a critical-severity vulnerability in Jack De Winter Winsmtp with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Buffer overflow in WinSMTP 1.06f and 2.X allows remote attackers to cause a denial of service via a long (1) USER or (2) HELO command.

Frequently asked questions

What is CVE-2000-0833?
Buffer overflow in WinSMTP 1.06f and 2.X allows remote attackers to cause a denial of service via a long (1) USER or (2) HELO command.
How severe is CVE-2000-0833?
CVE-2000-0833 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2000-0833 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0833?
CVE-2000-0833 primarily affects Jack De Winter Winsmtp. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0833?
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-2000-0833 published?
CVE-2000-0833 was published on 2000-11-14 and last updated on 2026-06-16.

References

Affected products (2)