CVE-2003-0567 describes a denial-of-service vulnerability in Cisco IOS versions 11.x and 12.0 through 12.2, as well as Cisco ONS 15454 and Optical Networking Systems Software. Remote attackers can exploit this by sending a specific sequence of IPv4 packets to a device interface, causing its input queue to become full and block traffic. This vulnerability has a CVSS score of 7.8 (High), indicating a critical impact with no authentication required and low attack complexity, leading to complete denial of service. While not listed in CISA's KEV catalog, exploit code is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
11.0CPE matchmatch criteria | cpe:2.3:o:cisco:ios:11.0:*:*:*:*:*:*:* | ||
11.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios:11.1:*:*:*:*:*:*:* | ||
11.1aaCPE matchmatch criteria | cpe:2.3:o:cisco:ios:11.1aa:*:*:*:*:*:*:* | ||
11.1caCPE matchmatch criteria | cpe:2.3:o:cisco:ios:11.1ca:*:*:*:*:*:*:* | ||
11.1ccCPE matchmatch criteria | cpe:2.3:o:cisco:ios:11.1cc:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.