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CVE-2026-33773

Junos OS: EX Series, QFX Series: If the same egress filter is configured on both an IRB and a physical interface one of those is not applied

CVSS 6.9 MEDIUMEPSS 0.2%CWE-1419
Vexday Risk Score
13Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS 6.9EPSS 0.2%KEV nãoPoC Nuclei Metasploit Patch referenciado
Ciclo de vida
09 abr 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
An Incorrect Initialization of Resource vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX Series and QFX Series device allows an unauthenticated, network-based attacker to cause an integrity impact to downstream networks. When the same family inet or inet6 filter is applied on an IRB interface and on a physical interface as egress filter on EX4100, EX4400, EX4650 and QFX5120 devices, only one of the two filters will be applied, which can lead to traffic being sent out one of these interfaces which should have been blocked. This issue affects Junos OS on EX Series and QFX Series: * 23.4 version 23.4R2-S6, * 24.2 version 24.2R2-S3. No other Junos OS versions are affected.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/AU:Y/R:U/RE:M

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