Security readout for executives and security teams
Avirt Mail versions 4.0 and 4.2 contain a flaw that lets a remote attacker crash the mail service by sending an overly long "RCPT TO" or "MAIL FROM" command. The advisory also raises the possibility of arbitrary command execution. This is a very old product from 2000, so operational risk today is limited to legacy or forgotten deployments. Exposure today is very narrow. Avirt Mail 4.0/4.2 dates to 2000 and is not a modern mainstream mail platform. Any risk sits in legacy Windows-era SMTP servers still reachable on TCP/25 that were never retired. Modern environments running current MTAs (Exchange, Postfix, Sendmail, cloud mail) are not affected. Low priority for modern environments. Only material if the business still operates a 25-year-old Avirt Mail server exposed to untrusted networks. If none exists, this CVE is a housekeeping item; if one does exist, treat retirement of that server as the business action, not patching. Mitigation focus: Inventory SMTP relays for any surviving Avirt Mail 4.0 or 4.2 instances.; Retire or replace Avirt Mail with a supported, maintained MTA.; Restrict SMTP exposure to trusted networks until the legacy server is decommissioned..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2000-0971 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- avirt-mail-from-dos(5397)CVE reference · vdb-entry, x_refsource_XF
- avirt-rcpt-to-dos(5398)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.