CVE-2000-0971

CVE-2000-0971 is a critical-severity vulnerability in Avirt Avirt Mail Server 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

Description

Avirt Mail 4.0 and 4.2 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long "RCPT TO" or "MAIL FROM" command.

Frequently asked questions

What is CVE-2000-0971?
Avirt Mail 4.0 and 4.2 allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long "RCPT TO" or "MAIL FROM" command.
How severe is CVE-2000-0971?
CVE-2000-0971 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2000-0971 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0971?
CVE-2000-0971 primarily affects Avirt Avirt Mail Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0971?
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-2000-0971 published?
CVE-2000-0971 was published on 2000-12-19 and last updated on 2026-06-16.

References

Affected products (2)