CVE-2003-0567 — HIGH severity vulnerability (Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers)
Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service (traffic block) by sending a particular sequence of IPv4 packets to an interface on the device, causing the input queue on that interface to be marked as full.
| CVE ID | CVE-2003-0567 |
|---|---|
| Severity | HIGH |
| CVSS score | 7.8 |
| CVSS vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
| CWE | CWE-20 |
| Status | Modified |
| Published | 2003-08-18 |
| Last modified | 2026-04-16 |
| Description | Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service (traffic block) by sending a particular sequence of IPv4 packets to an interface on the device, causing the input queue on that interface to be marked as full. |
| Source | NIST National Vulnerability Database |
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