CVE-2020-3449 is a denial-of-service vulnerability in Cisco IOS XR Software's BGP additional paths feature, caused by an incorrect lexicographical order calculation leading to an infinite loop. An unauthenticated, remote attacker can trigger this by sending a specific BGP update, which then requires an authorized user to execute a "show bgp" command. The vulnerability has a CVSS score of 4.3 (Medium), indicating a network-based attack with low complexity but requiring user interaction, resulting in a denial of service by preventing BGP status monitoring and updates. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 7.1.2CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* | ||
>= 7.2.0, < 7.2.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* | ||
>= 7.3.0, < 7.3.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
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, 0.0 Mastodon, and 0.1 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.