Junos OS: QFX5000 Series, EX4600 Series: In a VxLAN scenario an adjacent attacker within the VxLAN sending genuine packets may cause a DMA memory leak to occur.
Published Oct 12, 2023 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
Junos OS: QFX5000 Series, EX4600 Series: In a VxLAN scenario an adjacent attacker within the VxLAN sending genuine packets may cause a DMA memory leak to occur.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
An Improper Input Validation vulnerability in the VxLAN packet forwarding engine (PFE) of Juniper Networks Junos OS on QFX5000 Series, EX4600 Series devices allows an unauthenticated, adjacent attacker, sending two or more genuine packets in the same VxLAN topology to possibly cause a DMA memory leak to occur under various specific operational conditions. The scenario described here is the worst-case scenario. There are other scenarios that require operator action to occur.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published Oct 12, 2023 · Last refreshed Nov 3, 2026