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01 Record

CVE-2024-39556

Junos OS and Junos OS Evolved: Loading a malicious certificate from the CLI may result in a stack-based overflow

HighPUBLISHEDCNA: juniper
CNA base score7.1 CVSS v4.0CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

02 Description

Junos OS and Junos OS Evolved: Loading a malicious certificate from the CLI may result in a stack-based overflow

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.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total 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
0.09% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 0.5% of scored records. A rank, not a probability.
NVD base score
7.1 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Analyzed. 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
2024-07-10 22:38Z2 YR AGO
Last updated
2024-08-02 04:26Z2 YR AGO
Reserved
2024-06-25
Assigning CNA
juniper
Record state
PUBLISHED
Severity
High (CVSS 7.1)
CNA CVSS vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-121Stack-based Buffer OverflowVariant
  • CWE-787Out-of-bounds WriteBase
Data version
5.1
Document digest
542c762c26fa74318da1b21ae248c0259f7ebbb16ac2fd404abbfae0c5a14eab

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS0 to < 21.4R3-S7, 22.1 to < 22.1R3-S6, 22.2 to < 22.2R3-S4, 22.3 to < 22.3R3-S3, 22.4 to < 22.4R3-S2, 23.2 to < 23.2R2, 23.4 to < 23.4R1-S1, 23.4R2—
Juniper NetworksJunos OS Evolved0 to < 21.4R3-S7-EVO, 22.1-EVO to < 22.1R3-S6-EVO, 22.2-EVO to < 22.2R3-S4-EVO, 22.3-EVO to < 22.3R3-S3-EVO, 22.4-EVO to < 22.4R3-S2-EVO, 23.2-EVO to < 23.2R2-EVO, 23.4-EVO to < 23.4R1-S1-EVO, 23.4R2-EVO—
juniperjunos_os_evolved0 to < 21.4r3-s7-evo, 22.1-evo to < 22.1r3-s6-evo, 22.2-evo to < 22.2r3-s4-evo, 22.3-evo to < 22.3r3-s3-evo, 22.4-evo to < 22.4r3-s3-evo, 23.2-evo to < 23.2r2-evo—
juniperjunos_os0 to < 21.4r3-s7, 22.1 to < 22.1r3-s6, 22.2 to < 22.2r3-s4, 22.3 to < 22.3r3-s3, 22.4 to < 22.4r3-s2, 23.2 to < 23.2r2, 23.4 to < 23.4r1-s1, 23.4 to < 23.4r2, 23.4-evo to < 23.4r1-s1-evo, 23.4-evo to < 23.4r2-evo—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS: 21.2R3-S8, 21.4R3-S7, 22.1R3-S6, 22.2R3-S4, 22.3R3-S3, 22.4R3-S2, 23.2R2, 23.4R1-S1, 23.4R2, 24.2R1, and all subsequent releases. Junos OS Evolved: 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.1R3-S6-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S2-EVO, 23.2R2-EVO, 23.4R1-S1-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases.