CVE-2024-47504: SRX5000 Series: Receipt of a specific malformed packet will cause a flowd crash

Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.

Affected and fixed versions

Product / branch	Fixed in
Junos OS (SRX5000 Series) 22.2	22.2R3-S5 or later
Junos OS (SRX5000 Series) 22.3	22.3R3-S4 or later
Junos OS (SRX5000 Series) 22.4	22.4R3-S4 or later
Junos OS (SRX5000 Series) 23.2	23.2R2-S2 or later
Junos OS (SRX5000 Series) 23.4	23.4R2-S1 or later
Junos OS (SRX5000 Series) 24.2	24.2R1-S1, 24.2R2 or later

Always confirm against the vendor advisory, which lists every fixed hotfix.

What it is

An Improper Validation of Specified Type of Input vulnerability in the packet forwarding engine (pfe) Juniper Networks Junos OS on SRX5000 Series allows an unauthenticated, network based attacker to cause a Denial of Service (Dos).

When a non-clustered SRX5000 device receives a specifically malformed packet this will cause a flowd crash and restart.

This issue affects Junos OS:

22.1 releases 22.1R1 and later before 22.2R3-S5,
22.3 releases before 22.3R3-S4,
22.4 releases before 22.4R3-S4,
23.2 releases before 23.2R2-S2,
23.4 releases before 23.4R2-S1,
24.2 releases before 24.2R1-S1, 24.2R2.

Please note that the PR does indicate that earlier versions have been fixed as well, but these won't be adversely impacted by this.

Am I affected?

To be exposed to this issue the device must not be configured for clustering:

user@host> show chassis cluster status error: Chassis cluster is not enabled.

Workarounds

There are no known workarounds for this issue.

Exploitation

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.