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01 Record

CVE-2024-21596

Junos OS and Junos OS Evolved: A specific BGP UPDATE message will cause a crash in the backup Routing Engine in NSR-enabled devices

MediumPUBLISHEDCNA: juniper
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

02 Description

Junos OS and Junos OS Evolved: A specific BGP UPDATE message will cause a crash in the backup Routing Engine in NSR-enabled devices

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
0.54% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 45.3% of scored records. A rank, not a probability.
NVD base score
5.3 (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:L
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
2024-01-12 00:52Z2 YR AGO
Last updated
2024-09-25 19:17Z2 YR AGO
Reserved
2023-12-27
Assigning CNA
juniper
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-122Heap-based Buffer OverflowVariant
  • CWE-787Out-of-bounds WriteBase
Data version
5.1
Document digest
78f6fa05235a39b6d81b30c0b4e4b587561080dc2a7b137d585d860669fdaef6

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS0 to < 20.4R3-S9, 21.2 to < 21.2R3-S7, 21.3 to < 21.3R3-S5, 21.4 to < 21.4R3-S5, 22.1 to < 22.1R3-S4, 22.2 to < 22.2R3-S2, 22.3 to < 22.3R3-S1, 22.4 to < 22.4R2-S2, 22.4R3, 23.1 to < 23.1R2, 23.2 to < 23.2R1-S2, 23.2R2MX Series, PTX Series, ACX Series, EX Series, QFX Series
Juniper NetworksJunos OS Evolved0 to < 21.3R3-S5-EVO, 21.4-EVO to < 21.4R3-S5-EVO, 22.1-EVO to < 22.1R3-S4-EVO, 22.2-EVO to < 22.2R3-S2-EVO, 22.4-EVO to < 22.4R2-S2-EVO, 22.4R3-EVO, 23.1-EVO to < 23.1R2-EVO, 23.2-EVO to < 23.2R1-S2-EVO, 23.2R2-EVOPTX Series, ACX Series, QFX Series

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS: 21.2R3-S7, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.1R2, 23.2R1-S2, 23.2R2, 23.3R1, 23.4R1, and all subsequent releases. Junos OS Evolved: 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.4R2-S2-EVO, 22.4R3-EVO, 23.1R2-EVO, 23.2R1-S2-EVO, 23.2R2-EVO, 23.3R1-EVO, 23.4R1-EVO, and all subsequent releases.