SEPTEMBER 19, 2026
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Case File

CVE-2026-33799

MEDIUM · CVSS 4.3 EPSS 0.23%

Source: NVD + CISA KEV + EPSS · Published 2026-07-09 · Last synced 2026-08-08

CyberRota Analysis

AI-Generated

An Out-of-bounds Write vulnerability in the SNMP daemon of Juniper Networks' Junos OS and Junos OS Evolved allows authenticated network-based attackers to exploit specific SNMPv3 queries, leading to memory exhaustion and potential process crashes. This impacts the system's ability to monitor network performance via SNMP, making it critical for organizations using affected versions to prioritize remediation. Users of all versions prior to specified updates should assess their systems for exposure and apply necessary patches to mitigate this risk.

CVE
CVE-2026-33799
Severity
MEDIUM
CVSS
4.3
EPSS
0.23%

Original NVD Description

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.

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