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01 Record

CVE-2023-0026

2023-06: Out-of-Cycle Security Bulletin: Junos OS and Junos OS Evolved: A BGP session will flap upon receipt of a specific, optional transitive attribute

HighPUBLISHEDCNA: juniper
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

2023-06: Out-of-Cycle Security Bulletin: Junos OS and Junos OS Evolved: A BGP session will flap upon receipt of a specific, optional transitive attribute

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.64% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 50.7% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/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
2023-06-21 00:00Z3 YR AGO
Last updated
2024-12-06 19:18Z1 YR AGO
Reserved
2022-12-27
Assigning CNA
juniper
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
8063b1e2a801e591db0d70e9dc9838cbd447a652471811da446f39538845dc27

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS< 20.4R3-S8, 21.1 to < 21.1*, 21.2 to < 21.2R3-S6, 21.3 to < 21.3R3-S5, 21.4 to < 21.4R3-S4, 22.1 to < 22.1R3-S4, 22.2 to < 22.3R2-S2, 22.3R3-S1, 22.3 to < 22.2R3-S2, 22.4 to < 22.4R2-S1, 22.4R3, 23.1 to < 23.1R1-S1, 23.1R2—
Juniper NetworksJunos OS Evolved< 20.4R3-S8-EVO, 21.1R1-EVO to < 21.1*, 21.2 to < 21.2R3-S6-EVO, 21.3 to < 21.3R3-S5-EVO, 21.4 to < 21.4R3-S4-EVO, 22.1 to < 22.1R3-S4-EVO, 22.2 to < 22.2R3-S2-EVO, 22.3 to < 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4 to < 22.4R2-S1-EVO, 22.4R3-EVO, 23.1 to < 23.1R1-S1-EVO, 23.1R2-EVO—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS: 20.4R3-S8*, 21.2R3-S6*, 21.3R3-S5*, 21.4R3-S4, 22.1R3-S4*, 22.2R3-S2*, 22.3R2-S2*, 22.3R3-S1*, 22.4R2-S1*, 22.4R3*, 23.1R1-S1*, 23.1R2*, 23.2R1*, and all subsequent releases; Junos OS Evolved: 20.4R3-S8-EVO*, 21.2R3-S6-EVO*, 21.3R3-S5-EVO*, 21.4R3-S4-EVO, 22.1R3-S4-EVO*, 22.2R3-S2-EVO*, 22.3R2-S2-EVO*, 22.3R3-S1-EVO*, 22.4R2-S1-EVO*, 22.4R3-EVO*, 23.1R1-S1-EVO*, 23.1R2-EVO*, 23.2R1-EVO*, and all subsequent releases. *Pending Publication