PT-2026-56927 · Juniper Networks · Junos+1
Published
2026-07-09
·
Updated
2026-07-09
·
CVE-2026-33799
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
An Out-of-bounds Write vulnerability in the SNMP daemon (snmpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated network-based attacker sending specific valid SNMPv3 queries to trigger a memory leak. Over time, continuous receipt of these queries will result in snmpd process memory exhaustion, resulting in a process crash and restart, impacting the ability to monitor the system via SNMP.
Memory usage can be monitored using the following command:
user@device> show system processes extensive | match snmpd
This issue affects:
Junos OS:
- all versions before 21.2R3-S8;
- from 21.4 before 21.4R3-S7;
- from 22.1 before 22.1R3-S6;
- from 22.2 before 22.2R3-S4;
- from 22.3 before 22.3R3-S3;
- from 22.4 before 22.4R3-S2;
- from 23.2 before 23.2R2;
- from 23.4 before 23.4R2.
Junos OS Evolved:
- all versions before 21.2R3-S8-EVO;
- from 21.4 before 21.4R3-S7-EVO;
- all versions of 22.1-EVO,
- from 22.2 before 22.2R3-S4-EVO;
- from 22.3 before 22.3R3-S3-EVO;
- all versions of 22.4-EVO,
- from 23.2 before 23.2R2-EVO;
- from 23.4 before 23.4R2-EVO.
Fix
Memory Corruption
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Weakness Enumeration
Related Identifiers
Affected Products
Junos
Junos Evolved