Function Call Vulnerability in Junos OS Routing Protocol Daemon
CVE-2026-101959

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-2026-101959?

A vulnerability affecting the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows unauthenticated adjacent attackers to exploit specifically malformed LSP-ping messages. Such exploitation can lead to a crash of the rpd process, rendering network services unavailable and having significant implications on network stability and security. Operators of affected systems should consider implementing mitigating measures as outlined in the vendor advisory.

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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