Security readout for executives and security teams
A very old flaw in Norton AntiVirus 2000's email-protection proxy (POProxy) let an attacker crash or potentially take over the software by sending an oversized POP3 USER command. It only matters today if a legacy workstation still runs that specific 1999-era Norton component; modern Norton products are unaffected. Limited to legacy Windows endpoints still running Norton AntiVirus 2000 with the POProxy email-protection component enabled and reachable on the local POP3 path. The product is decades out of support, so exposure in modern enterprise fleets should be effectively zero. Very low priority for modern environments. Only material if a legacy NAV2000 workstation still runs POProxy on a reachable network; otherwise this is a historical record. Mitigation focus: Retire any remaining NAV2000 installations and migrate to a currently supported endpoint protection product.; Disable the POProxy email-protection component on any host where it still runs.; Block or filter untrusted POP3 traffic to affected hosts at the host firewall..
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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CVE-1999-1004 mapping review
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Open ATT&CK lookup- Severity
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- CVSS
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- Known Exploited
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CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
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Source materials
- CVE List V5 sourceCVE List V5
Products and packages named in the record
CWE details
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