Vulnerability in Juniper Junos
CVE-2021-0259
Due to a vulnerability in DDoS protection in Juniper Networks Junos OS and Junos OS Evolved on QFX5K Series switches in a VXLAN configuration, instability might be experienced in the underlay network as a consequence of exceeding the defau…
EPSS: 0.004 (29.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Juniper Junos — versions 17.3, 17.4, 18.1
- Juniper Junos_os_evolved — versions 18.3, 19.1, 19.2
- Juniper Qfx5100
- Juniper Qfx5110
- Juniper Qfx5120
- Juniper Qfx5130
- Juniper Qfx5200
- Juniper Qfx5210
- Juniper Qfx5220
- Juniper Networks Junos Os — versions 17.3, 17.4, 18.1
Weakness classification (CWE)
References
- sirt@juniper.net (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-0259?
- CVE-2021-0259 is a high-severity vulnerability in Juniper Junos, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.4/10. Published 2021-04-22.
- How severe is CVE-2021-0259?
- High severity. CVSS v3 base score is 7.4 out of 10.