CVE-2021-0211 is a critical denial-of-service vulnerability affecting Juniper Networks Junos OS and Junos OS Evolved. An attacker can exploit an improper check in the Routing Protocol Daemon (RPD) service by sending a crafted BGP FlowSpec message, leading to unexpected route changes and network traffic disruptions. This vulnerability has a CVSS score of 10.0 (Critical), indicating it can be exploited remotely with low complexity and high impact on availability and integrity. While no active exploitation or public exploit code has been identified, and community discussion is minimal, the potential for a sustained denial of service makes this a significant risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
17.3CPE matchmatch criteria | cpe:2.3:o:juniper:junos:17.3:-:*:*:*:*:*:* | ||
17.3CPE matchmatch criteria | cpe:2.3:o:juniper:junos:17.3:r1-s1:*:*:*:*:*:* | ||
17.3CPE matchmatch criteria | cpe:2.3:o:juniper:junos:17.3:r2:*:*:*:*:*:* | ||
17.3CPE matchmatch criteria | cpe:2.3:o:juniper:junos:17.3:r2-s1:*:*:*:*:*:* | ||
17.3CPE matchmatch criteria | cpe:2.3:o:juniper:junos:17.3:r2-s2:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.