CVE-2026-33775 (GCVE-0-2026-33775)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:30 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
Junos OS: MX Series: Mismatch between configured and received packet types causes memory leak in bbe-smgd
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-13 17:40 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107821 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 22.4R3-S8
(semver)
Affected: 23.2 , < 23.2R2-S5 (semver) Affected: 23.4 , < 23.4R2-S6 (semver) Affected: 24.2 , < 24.2R2-S2 (semver) Affected: 24.4 , < 24.4R2 (semver) Affected: 25.2 , < 25.2R2 (semver) |
guessed |
Date Public
2026-04-08 16:00
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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