01 Record
CVE-2021-0216
Junos OS: ACX5448, ACX710: BFD sessions might flap due to high rate of transit ARP packets
MediumPUBLISHEDCNA: juniper
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
02 Description
Junos OS: ACX5448, ACX710: BFD sessions might flap due to high rate of transit ARP packets
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.40% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 34.4% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-04-22 19:36Z5 YR AGO
- Last updated
- 2024-09-16 23:42Z2 YR AGO
- Reserved
- 2020-10-27
- Assigning CNA
- juniper
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- No CWE assigned
- Data version
- 5.1
- Document digest
- 0f2ea2eda1073fe660f73a80d0990c7bbbafd292f0e6efa3d6ca94f101939889
05 Affected products
VendorProductVersionsPlatforms
Juniper NetworksJunos OS18.2 to < 18.2R3-S8, 18.3 to < 18.3R3-S5, 18.4 to < 18.4R1-S6, 18.4R3-S7, 19.1 to < 19.1R3-S5, 19.2 to < 19.2R2, 19.2R3, 19.3 to < 19.3R3, 19.4 to < 19.4R3, 20.1 to < 20.1R2, 20.2 to < 20.2R2ACX5448, ACX5448, ACX710
06 References
- kb.juniper.nethttps://kb.juniper.net/JSA11118
07 Remediation
The following software releases have been updated to resolve this specific issue: Junos OS 18.2R3-S8, 18.3R3-S5, 18.4R1-S6, 18.4R3-S7, 19.1R3-S5, 19.2R2, 19.2R3, 19.3R3, 19.4R3, 20.1R2, 20.2R2, 20.3R1, and all subsequent releases.