CVE-2026-102078
CVE-2026-102078 · Junos OS: SRX Series: A high volume of DNS traffic over TCP can lead to a flowd crash
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.2 · High · EPSS 0.3% · Fix available
- Published
- Updated
Affected products and versions
junos os
- Versions
- ≥ 0, < 23.2R2-S5: Affected (custom)
- ≥ 23.4, < 23.4R2-S6: Affected (custom)
- ≥ 24.2, < 24.2R2-S3: Affected (custom)
- ≥ 24.4, < 24.4R2-S1: Affected (custom)
- ≥ 25.2, < 25.2R1-S1, 25.2R2: Affected (custom)
Update to 23.2R2-S5