CVE-2003-0100

CVE-2003-0100 is a high-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Buffer overflow in Cisco IOS 11.2.x to 12.0.x allows remote attackers to cause a denial of service and possibly execute commands via a large number of OSPF neighbor announcements.

Frequently asked questions

What is CVE-2003-0100?
Buffer overflow in Cisco IOS 11.2.x to 12.0.x allows remote attackers to cause a denial of service and possibly execute commands via a large number of OSPF neighbor announcements.
How severe is CVE-2003-0100?
CVE-2003-0100 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2003-0100 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0100?
CVE-2003-0100 primarily affects Cisco Ios. In total, 221 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0100?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2003-0100 published?
CVE-2003-0100 was published on 2003-03-03 and last updated on 2026-06-16.

References

Affected products (221)

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