CVE-2026-33775

published 2026-04-09

CVE-2026-33775: A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS…

high 7.1 CVSS 4.0

AV A AC L AT N PR N UI N VC N VI N VA H SC N SI N SA L E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU Y R X V X RE M U X

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[]: %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

8 ranges

Vendor	Product	Version range	Fixed in
juniper	junos_os	—	—
juniper	mx_series	—	—
juniper_networks	junos_os	< 22.4R3-S8	22.4R3-S8
juniper_networks	junos_os	>= 23.2 < 23.2R2-S5	23.2R2-S5
juniper_networks	junos_os	>= 23.4 < 23.4R2-S6	23.4R2-S6
juniper_networks	junos_os	>= 24.2 < 24.2R2-S2	24.2R2-S2
juniper_networks	junos_os	>= 24.4 < 24.4R2	24.4R2
juniper_networks	junos_os	>= 25.2 < 25.2R2	25.2R2

CWE-401