Alert Type

SRN - Software Release Notification
Low/NotificationSoftware Release Notification
Low/NotificationSoftware Release Notification

Product Affected

QFX5000 running Junos Evolved software

Alert Description

Junos Software Service Release version 25.2X100-D21-EVO is now available for download from the Junos software download site

Download Junos Software Service Release:

  1. Go to Junos Platforms - Download Software page
  2. Input your product in the "Find a Product" search box
  3. From the Type/OS drop-down menu, select Junos SR
  4. From the Version drop-down menu, select your version
  5. Click the Software tab
  6. Select the Install Package as need and follow the prompts

NOTE: Starting on August 30th, 2024, we include PR's severity with each entry. See KB86335 [juniper.net] for the definition of PR's Severity

 

Junos Selective Update (JSU) feasible

Not applicable

Call to Action

For your review

Solution

Junos Software service Release version 25.2X100-D21-EVO is now available.

25.2X100-D21-EVO - List of Fixed issues

PR NumberSynopsisCategory: EVO L3 routing for BCM XGS Platforms
1960408
Minor		MPLS labelled traffic between two PE's through a L2 switch is dropped
Product-Group=evo
Severity=Minor		On Junos Evolved QFX5230, QFX5240 and QFX5250 series switches acting as an L2 switch between the PE routers, the LDP adjacency between the PE routers will not be established. IRB interfaces on the PE routers are connected via the L2 switch. This occurs because the MPLS-labelled packets passing through this switch are subjected to VLAN membership check and dropped even before the correct VLAN membership is determined. This results in loss of MPLS traffic and causes service impact.

 

 

25.2X100-D21-EVO - List of Known issues

PR NumberSynopsisCategory: JUNOS kernel/ukernel changes
1833705
Major		Configuration archival does not work using SFTP when using the mgmt_junos routing instance
Product-Group=evo		On Junos OS and Junos OS Evolved platforms, when the SFTP protocol uses the mgmt_junos routing instance to communicate with the SFTP server, it will fail.

Resolved In: evo:23.4R2-S5-EVO evo:25.3R1-EVO junos:22.2R3-S6 junos:23.2R2-S3 junos:23.4R2-S5 junos:24.2R2 junos:24.4R1 junos:25.1R1 junos:25.3R1
PR NumberSynopsisCategory: Border Gateway Protocol
1907528
Major		Junos OS and Junos OS Evolved: When a specifically malformed BGP route update is received RPD crashes (CVE-2026-33801)
Product-Group=evo		An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to send a specific BGP update over an established BGP session to cause a Denial-of-Service (DoS). Please refer to https://supportportal.juniper.net/JSA110076 [juniper.net] for more information.

Resolved In: evo:25.2R2-EVO evo:25.4R1-EVO evo:26.1R1-EVO junos:25.2R2 junos:25.4R1 junos:26.1R1

 

Modification History

First publication 2026-08-04