CVE-2006-4775 describes a denial-of-service vulnerability in Cisco IOS 12.1(19) and CatOS, specifically within the VLAN Trunking Protocol (VTP) feature. An unauthenticated remote attacker can trigger this by sending a VTP update with a crafted revision value (0x7FFFFFFF), which leads to an integer overflow and subsequent negative interpretation, causing a system crash. This vulnerability has a high severity CVSS score of 7.8, indicating a critical impact on availability with low attack complexity. Despite its severity, there is no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
12.1\(19\)CPE matchmatch criteria | cpe:2.3:o:cisco:ios:12.1\(19\):*:*:*:*:*:*:* | ||
All Versions ImpactedCPE matchmatch criteria | cpe:2.3:o:cisco:catos:*:*:*:*:*:*:*:* |
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.