CVE-2001-0740

CVE-2001-0740 is a medium-severity vulnerability in 3com 3c840-us with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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.

Frequently asked questions

What is CVE-2001-0740?
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.
How severe is CVE-2001-0740?
CVE-2001-0740 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-0740 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0740?
CVE-2001-0740 primarily affects 3com 3c840-us. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-0740?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-0740 published?
CVE-2001-0740 was published on 2001-10-18 and last updated on 2026-06-16.

References

Affected products (2)