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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-33803

Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacker

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Status
Published
Published
Updated
Assigning organization
juniper

Description

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device. Due to a wrong initialization, a process which should only be able to communicate internally within the device can be reached over the network via an open port. This leads to a device being inadvertently exposed and increased CPU cycles spent processing ingress packets. This issue affects Junos OS Evolved: * all versions before 23.2R2-S7-EVO, * 23.4 versions before 23.4R2-S8-EVO, * 24.2 versions before 24.2R2-S5-EVO, * 24.4 versions before 24.4R2-S4-EVO, * 25.2 versions before 25.2R2-S1-EVO, * 25.4 versions before 25.4R1-S2-EVO.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Juniper Networks Junos OS Evolved

Default version status: unaffected

  • 0 to < 23.2R2-S7-EVOaffected
  • 23.4 to < 23.4R2-S8-EVOaffected
  • 24.2 to < 24.2R2-S5-EVOaffected
  • 24.4 to < 24.4R2-S4-EVOaffected
  • 25.2 to < 25.2R2-S1-EVOaffected
  • 25.4 to < 25.4R1-S2-EVOaffected

References