CVE-1999-1336: 3Com HiPer Access Router Card (HiperARC) 4.0 through 4.2.29 allows remote attackers to cause a denial of service (reboot

Published n/a Updated 2026-08-21T04:30:48.371Z

Summary

3Com HiPer Access Router Card (HiperARC) 4.0 through 4.2.29 allows remote attackers to cause a denial of service (reboot) via a flood of IAC packets to the telnet port.

Severity

UNKNOWN

Source Attribution

Source: NVD · Updated: 2026-08-21T04:30:48.371Z · Confidence: high

Impact

Based on CVSS vector: n/a — assess confidentiality, integrity, and availability impact via the official vector documentation.

Affected Software

Fix

Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.

References