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01 Record

CVE-2024-21620

Junos OS: SRX Series and EX Series: J-Web doesn't sufficiently sanitize input to prevent XSS

HighPUBLISHEDCNA: juniper
CNA base score8.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

02 Description

Junos OS: SRX Series and EX Series: J-Web doesn't sufficiently sanitize input to prevent XSS

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
0.90% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 59.5% of scored records. A rank, not a probability.
NVD base score
6.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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
2024-01-25 22:50Z2 YR AGO
Last updated
2025-05-29 15:18Z1 YR AGO
Reserved
2023-12-27
Assigning CNA
juniper
Record state
PUBLISHED
Severity
High (CVSS 8.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
Data version
5.1
Document digest
d6ad1fa408e73217924c69f19c6ae06168bbd0a32bde73eb82d3379f6b8dee32

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS0 to < 20.4R3-S10, 21.2 to < 21.2R3-S8, 21.4 to < 21.4R3-S6, 22.1 to < 22.1R3-S5, 22.2 to < 22.2R3-S3, 22.3 to < 22.3R3-S2, 22.4 to < 22.4R3-S1, 23.2 to < 23.2R2, 23.4 to < 23.4R2SRX Series, EX Series

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: 20.4R3-S10*, 21.2R3-S8*, 21.4R3-S6*, 22.1R3-S5*, 22.2R3-S3*, 22.3R3-S2*, 22.4R3-S1*, 23.2R2*, 23.4R2*, 24.2R1*, and all subsequent releases. * Pending Publication