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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-102078

Junos OS: SRX Series: A high volume of DNS traffic over TCP can lead to a flowd crash

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Status
Published
Published
Updated
Assigning organization
juniper

Description

A Use After Free vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). When web filtering for TCP traffic is configured, a high volume of DNS requests increases the likelihood of a flowd crash and restart, which leads to a complete service outage until the service has automatically recovered. This is a race condition outside the attacker's direct control. This issue affects Junos OS on SRX Series: * All versions before 23.2R2-S5; * from 23.4 before 23.4R2-S6; * from 24.2 before 24.2R2-S3; * from 24.4 before 24.4R2-S1; * from 25.2 before 25.2R1-S1, 25.2R2.

Affected products

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

Juniper Networks Junos OS

Default version status: unaffected

  • 0 to < 23.2R2-S5affected
  • 23.4 to < 23.4R2-S6affected
  • 24.2 to < 24.2R2-S3affected
  • 24.4 to < 24.4R2-S1affected
  • 25.2 to < 25.2R1-S1, 25.2R2affected

References