CVE-2019-16021 describes multiple denial-of-service vulnerabilities in Cisco IOS XR Software, specifically within its BGP EVPN functionality. An unauthenticated, remote attacker can exploit these by sending crafted BGP update messages with malformed EVPN attributes, causing the BGP process to restart. This vulnerability has a CVSS score of 7.5 (HIGH) due to its network attack vector and low attack complexity, leading to a high impact on availability. While the vulnerability requires a valid BGP peer connection, there is no evidence of active exploitation, public exploit code, or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
6.6.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:* | ||
6.6.2CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:* | ||
6.6.25CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:* | ||
7.0.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/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, 0.1 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.