CVE-2001-0740: 3com 3c840-Us

Medium severity, CVSS 5.0. EPSS: 4.1% chance of exploitation in the next 30 days.

3COM OfficeConnect 812 and 840 ADSL Router 4.2, running OCR812 router software 1.1.9 and earlier, allows remote attackers to cause a denial of service via a long string containing a large number of "%s" strings, possibly triggering a format string vulnerability.

Affected products

• 3com 3c840-Us: up to and including 1.1.9
• 3com 3cp4144: up to and including 1.1.9

Published 2001-10-18. Last modified 2026-06-16.