CVE-2003-0567

high Cisco
CVSS v3 Base Score
7.8
AV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS Score
24.6%
Exploitation probability in 30 days
Top 4% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Confidentiality
None
Integrity
None
Availability
C
Published: August 18, 2003 (8305 days ago)
Last Modified: April 16, 2026
Vendor: Cisco
Source: NVD

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.

CWE

CWE-20

Affected Products

cisco ioscisco optical networking systems softwarecisco ons 15454 optical transport platform

References

🔗 lists.grok.org.uk 🔗 www.cert.org 🔗 www.cert.org 🔗 www.cisco.com 🔗 www.kb.cert.org