CVE-2020-1634

Junos OS: High-End SRX Series: Multicast traffic might cause all FPCs to reset.

HIGH
7.5
CVSS Score
Published: April 8, 2020 at 07:26 PM UTC
Updated: June 17, 2026 at 03:02 AM UTC
10 products affected across 2 vendorsJunosSRX5600SRX5800

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

On High-End SRX Series devices, in specific configurations and when specific networking events or operator actions occur, an SPC receiving genuine multicast traffic may core. Subsequently, all FPCs in a chassis may reset causing a Denial of Service. This issue affects both IPv4 and IPv6. This issue affects: Juniper Networks Junos OS 12.3X48 version 12.3X48-D80 and later versions prior to 12.3X48-D95 on High-End SRX Series. This issue does not affect Branch SRX Series devices.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 12.3X48*, so it looks safe — our inference, not a vendor statement
juniper-srx1500 (environment) · juniper-srx300 (environment) · juniper-srx4100 (environment) · juniper-srx4200 (environment) · juniper-srx4600 (environment) · juniper-srx5400 (environment) · juniper-srx550 (environment) · juniper-srx5600 (environment) · juniper-srx5800 (environment)
All versions
All versions
All versions
All versions
All versions
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
https://kb.juniper.net/JSA11014

CVSS

7.5HIGHjuniper
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190NVD-CWE-noinfo

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