CVE-2026-33799

Name of the Vulnerable Software and Affected Versions Junos OS versions prior to 21.2R3-S8 Junos OS versions 21.4 through 21.4R3-S7 Junos OS versions 22.1 through 22.1R3-S6 Junos OS versions 22.2 through 22.2R3-S4 Junos OS versions 22.3 through 22.3R3-S3 Junos OS versions 22.4 through 22.4R3-S2 Junos OS versions 23.2 through 23.2R2 Junos OS versions 23.4 through 23.4R2 Junos OS Evolved versions prior to 21.2R3-S8-EVO Junos OS Evolved versions 21.4 through 21.4R3-S7-EVO Junos OS Evolved versions 22.1-EVO Junos OS Evolved versions 22.2 through 22.2R3-S4-EVO Junos OS Evolved versions 22.3 through 22.3R3-S3-EVO Junos OS Evolved versions 22.4-EVO Junos OS Evolved versions 23.2 through 23.2R2-EVO Junos OS Evolved versions 23.4 through 23.4R2-EVO

Description An Out-of-bounds Write issue in the SNMP daemon (snmpd) allows an authenticated network-based attacker to trigger a memory leak by sending specific valid SNMPv3 queries. Continuous receipt of these queries leads to memory exhaustion of the snmpd process, causing it to crash and restart, which disrupts system monitoring via SNMP.

Recommendations Update Junos OS to version 21.2R3-S8 or later. Update Junos OS to version 21.4R3-S7 or later. Update Junos OS to version 22.1R3-S6 or later. Update Junos OS to version 22.2R3-S4 or later. Update Junos OS to version 22.3R3-S3 or later. Update Junos OS to version 22.4R3-S2 or later. Update Junos OS to version 23.2R2 or later. Update Junos OS to version 23.4R2 or later. Update Junos OS Evolved to version 21.2R3-S8-EVO or later. Update Junos OS Evolved to version 21.4R3-S7-EVO or later. At the moment, there is no information about a newer version that contains a fix for Junos OS Evolved version 22.1-EVO. Update Junos OS Evolved to version 22.2R3-S4-EVO or later. Update Junos OS Evolved to version 22.3R3-S3-EVO or later. At the moment, there is no information about a newer version that contains a fix for Junos OS Evolved version 22.4-EVO. Update Junos OS Evolved to version 23.2R2-EVO or later. Update Junos OS Evolved to version 23.4R2-EVO or later.