Function Call Error in Juniper Networks Junos OS Evolved on PTX Series
CVE-2026-33783

7.1HIGH

Key Information:

Vendor

Juniper Networks
Status
Junos Os Evolved
Vendor
CVE Published:
9 April 2026

Badges

👾 Exploit Exists

What is CVE-2026-33783?

A functionality flaw in the sensor interface of Juniper Networks' Junos OS Evolved on PTX Series permits a network-based, authenticated attacker with limited privileges to induce a complete Denial of Service (DoS). When colored SRTE policy tunnels are established via PCEP and gRPC is utilized to monitor traffic, the system experiences a crash that does not self-restart, resulting in persistent service disruption. The anomaly occurs when the Originator ASN field in PCEP exceeds a value of 65,535. Recovery necessitates a manual system restart. This issue does not manifest when SRTE policy tunnels are configured statically.

Affected Version(s)

Junos OS Evolved PTX Series 0 < 22.4R3-S9-EVO

Junos OS Evolved PTX Series 23.2 < 23.2R2-S6-EVO

Junos OS Evolved PTX Series 23.4 < 23.4R2-S7-EVO

References

https://kb.juniper.net/JSA107870
vendor-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
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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