CVE-2003-0567
Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service ...
CVE-2003-0567 is a high vulnerability (CVSS 7.8) in Cisco Ios, published July 25, 2003. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 16.6%, the 97th percentile. No source names a fixed version.
- Severity
- 7.8 HighCVSS 2.0, NVD
- Exploit chance
- 16.6%EPSS, 97th percentile
- Exploitation
- None known3 public exploits
- Fixed in
- No fix listedNo source names one
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.
Exploit likelihood
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Cisco IOS - IPv4 Packets Denial of Service | 2003-07-18 |
| Exploit-DB | Cisco IOS - 'cisco-bug-44020.c' IPv4 Packet Denial of Service | 2003-07-21 |
| Exploit-DB | Cisco IOS - using hping Remote Denial of Service | 2003-07-22 |
What each source reports
NVD Score used
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.
- Record
CVE-2003-0567- CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2003-0567- Updated
- 2026-11-02
EUVDEUVD-2003-0561No score
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.
- Record
EUVD-2003-0561- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c4c9-f467-hxxvNo score
Cisco IOS 11.x and 12.0 through 12.2 allows remote attackers to cause a denial of service ...
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.
- Record
GHSA-c4c9-f467-hxxv- Weakness
- CWE-20
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
kb.cert.org/vuls/id/411332
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5603
cert.org/advisories/CA-2003-17.html
cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml
lists.grok.org.uk/pipermail/full-disclosure/2003-July/006743.html
nvd.nist.gov/vuln/detail/CVE-2003-0567
github.com/advisories/GHSA-c4c9-f467-hxxv