CVE-2019-1909 describes a denial-of-service (DoS) vulnerability in Cisco IOS XR Software's Border Gateway Protocol (BGP) implementation, affecting various Cisco ASR 9000 series routers. The vulnerability stems from incorrect processing of specific BGP update messages. An unauthenticated, remote attacker could exploit this by sending specially crafted BGP update messages from a configured peer or by injecting them into an existing BGP connection. The vulnerability has a CVSSv3 score of 5.9 (Medium), indicating a network-based attack with high impact on availability, but requiring high attack complexity due to the need for a valid BGP peer connection. While the potential impact is a DoS condition by restarting the BGP process, the attack is not trivial to execute. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, suggesting low public awareness and a lack of widespread attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.3.1, < 6.6.2CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.