Junos OS (SRX firewalls)
CVE-2026-102039: An attacker causes routing-process denial of service when GMPLS EVPL dynamic transport is used
A NULL Pointer Dereference vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to cause a denial of service via a malformed RSVP Path message received on an EVPL LMP control channel.
Published Juniper Networks advisory JSA112187
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Junos OS 0 | 23.2R2-S7.7 or later |
| Junos OS 23.4 | 23.4R2-S8.13 or later |
| Junos OS 24.2 | 24.2R2-S5.5 or later |
| Junos OS 24.4 | 24.4R2-S5 or later |
| Junos OS 25.2 | 25.2R2-S2 or later |
| Junos OS 25.4 | 25.4R1-S3 or later |
| Junos OS 26.2 | 26.2R1-S2 or later |
| Junos OS Evolved 0 | 23.2R2-S7.7-EVO or later |
| Junos OS Evolved 23.4 | 23.4R2-S8.11-EVO or later |
| Junos OS Evolved 24.2 | 24.2R2-S5.6-EVO or later |
| Junos OS Evolved 24.4 | 24.4R2-S5-EVO or later |
| Junos OS Evolved 25.2 | 25.2R2-S2-EVO or later |
| Junos OS Evolved 25.4 | 25.4R1-S3-EVO or later |
| Junos OS Evolved 26.2 | 26.2R1-S2-EVO or later |
| Junos OS Evolved 23.4X100 | See the advisory |
| Junos OS Evolved 25.2X100 | 25.2X100-D35-EVO or later |
| Junos OS Evolved 25.4X300 | 25.4X300-D40-EVO or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
In short
A flaw in the rpd process of Junos OS and Junos OS Evolved allows an attacker to trigger a NULL pointer dereference by sending a malformed RSVP Path message over an EVPL LMP control channel. This vulnerability enables an unauthenticated attacker on an adjacent network to cause a denial of service without requiring user interaction or prior access to the system.
Written by a language model from the vendor's description. Versions, fixes and exploitation status on this page come straight from the vendor and CISA.
The vendor's description
A NULL Pointer Dereference vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to cause a denial of service via a malformed RSVP Path message received on an EVPL LMP control channel.
Workarounds
There are no known workarounds for this issue.
Exploitation
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 19 Oct 2026.