CVE-2001-0280

CVE-2001-0280 is a critical-severity vulnerability in Atrium Software Mercur with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Buffer overflow in MERCUR SMTP server 3.30 allows remote attackers to execute arbitrary commands via a long EXPN command.

Frequently asked questions

What is CVE-2001-0280?
Buffer overflow in MERCUR SMTP server 3.30 allows remote attackers to execute arbitrary commands via a long EXPN command.
How severe is CVE-2001-0280?
CVE-2001-0280 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2001-0280 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0280?
CVE-2001-0280 affects Atrium Software Mercur. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0280?
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-2001-0280 published?
CVE-2001-0280 was published on 2001-05-03 and last updated on 2026-06-16.

References

Affected products (1)