CVE-2021-0226
Last modified
CVE-2021-0226 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On Juniper Networks Junos OS Evolved devices, receipt of a specific IPv6 packet may cause an established IPv6 BGP session to terminate, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. EPSS estimates a 0.88% chance of exploitation in the next 30 days.
Description
On Juniper Networks Junos OS Evolved devices, receipt of a specific IPv6 packet may cause an established IPv6 BGP session to terminate, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue does not affect IPv4 BGP sessions. This issue affects IBGP or EBGP peer sessions with IPv6. This issue affects: Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S3-EVO; 20.2 versions prior to 20.2R2-S1-EVO; 20.3 versions prior to 20.3R2-EVO. This issue does not affect Juniper Networks Junos OS releases.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Juniper | Junos Os Evolved | 20.1 | R1 |
| Juniper | Junos Os Evolved | 20.2 | R1 |
| Juniper | Junos Os Evolved | 20.3 | R1 |
References
- https://kb.juniper.net/JSA11121Vendor Advisory
- https://kb.juniper.net/JSA11121Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-0226?
How severe is CVE-2021-0226?
How do I fix CVE-2021-0226?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-0220The Junos Space Network Management Platform has been found t…6.8
- CVE-2021-0221In an EVPN/VXLAN scenario, if an IRB interface with a virtua…6.5
- CVE-2021-0222A vulnerability in Juniper Networks Junos OS allows an attac…7.4
- CVE-2021-0223A local privilege escalation vulnerability in telnetd.real o…7.8
- CVE-2021-0224A vulnerability in the handling of internal resources necess…6.5
- CVE-2021-0225An Improper Check for Unusual or Exceptional Conditions in J…5.8
- CVE-2021-0227An improper restriction of operations within the bounds of a…7.5
- CVE-2021-0228An improper check for unusual or exceptional conditions vuln…6.5
- CVE-2021-0229An uncontrolled resource consumption vulnerability in Messag…5.3
- CVE-2021-0230On Juniper Networks SRX Series devices with link aggregation…7.5
- CVE-2021-0231A path traversal vulnerability in the Juniper Networks SRX a…6.5
- CVE-2021-0232An authentication bypass vulnerability in the Juniper Networ…7.4
Are you affected by CVE-2021-0226?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST