Reachable Assertion Vulnerability in Junos OS by Juniper Networks
CVE-2026-102042

7.1HIGH

Key Information:

Vendor

Juniper Networks
Status
Junos Os
Junos Os Evolved
Vendor
CVE Published:
14 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-102042?

A Reachable Assertion vulnerability exists within the rpd process of Juniper Networks' Junos OS and Junos OS Evolved. An attacker positioned on the same network may leverage this flaw to crash the routing process through RSVP-TE associated-bidirectional LSP signaling, potentially leading to network disruption. This vulnerability highlights the need for improved security measures and awareness among users of affected Juniper products.

Affected Version(s)

Junos OS 0 < 23.2R2-S7.7

Junos OS 23.4 < 23.4R2-S8.13

Junos OS 24.2 < 24.2R2-S5.5

References

https://supportportal.juniper.net/JSA112187
vendor-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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