Security readout for executives and security teams
This old vulnerability can make certain 3Com HiPer Access Router Card software versions reboot when their telnet service is flooded with specific control traffic. The business impact is availability loss, not data theft based on the provided sources. Exposure matters most where legacy HiPerARC systems still exist and telnet is reachable. Likely limited to legacy 3Com HiPerARC deployments, especially systems still running versions 4.0 through 4.2.29 with telnet reachable from untrusted networks. Modern environments are unlikely exposed unless old routing equipment remains in service. Treat this as a legacy exposure review item. It becomes urgent if affected routing equipment supports production connectivity and telnet is reachable beyond trusted administration paths. Mitigation focus: Identify any 3Com HiPerARC systems and record software versions.; Check vendor or archival guidance for corrected software or official workarounds.; Disable telnet management where operationally possible..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CVE-1999-1336 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
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- Known Exploited
- No
- Published
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
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CWE details
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