CVE-2026-33775
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).
If the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory
available to bbe-smgd has been consumed, no new subscribers will be able to login.
The memory utilization of bbe-smgd can be monitored with the following show command:
user@host> show system processes extensive | match bbe-smgd
The below log message can be observed when this limit has been reached:
bbesmgd[<PID>]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion
This issue affects Junos OS on MX Series:
- all versions before 22.4R3-S8,
- 23.2 versions before 23.2R2-S5,
- 23.4 versions before 23.4R2-S6,
- 24.2 versions before 24.2R2-S2,
- 24.4 versions before 24.4R2,
- 25.2 versions before 25.2R2.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Juniper Networks | Junos OS | 0 < 22.4R3-S8 | affected |
| Juniper Networks | Junos OS | 23.2 < 23.2R2-S5 | affected |
| Juniper Networks | Junos OS | 23.4 < 23.4R2-S6 | affected |
| Juniper Networks | Junos OS | 24.2 < 24.2R2-S2 | affected |
| Juniper Networks | Junos OS | 24.4 < 24.4R2 | affected |
| Juniper Networks | Junos OS | 25.2 < 25.2R2 | affected |
Weaknesses
- CWE-401: CWE-401 Missing Release of Memory after Effective Lifetime
Workarounds
There are no known workarounds for this issue.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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