{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33799", "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "state": "PUBLISHED", "assignerShortName": "juniper", "dateReserved": "2026-03-23T19:46:13.673Z", "datePublished": "2026-07-09T21:02:31.614Z", "dateUpdated": "2026-07-09T21:02:31.614Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "21.2R3-S8", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "21.4R3-S7", "status": "affected", "version": "21.4", "versionType": "custom"}, {"lessThan": "22.1R3-S6", "status": "affected", "version": "22.1", "versionType": "custom"}, {"lessThan": "22.2R3-S4", "status": "affected", "version": "22.2", "versionType": "custom"}, {"lessThan": "22.3R3-S3", "status": "affected", "version": "22.3", "versionType": "custom"}, {"lessThan": "22.4R3-S2", "status": "affected", "version": "22.4", "versionType": "custom"}, {"lessThan": "23.2R2", "status": "affected", "version": "23.2", "versionType": "custom"}, {"lessThan": "23.4R2", "status": "affected", "version": "23.4", "versionType": "custom"}]}, {"defaultStatus": "unaffected", "product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [{"lessThan": "21.2R3-S8-EVO", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "21.4R3-S7-EVO", "status": "affected", "version": "21.4", "versionType": "custom"}, {"lessThan": "22.1*", "status": "affected", "version": "22.1", "versionType": "custom"}, {"lessThan": "22.2R3-S4-EVO", "status": "affected", "version": "22.2", "versionType": "custom"}, {"lessThan": "22.3R3-S3-EVO", "status": "affected", "version": "22.3", "versionType": "custom"}, {"lessThan": "22.4*", "status": "affected", "version": "22.4", "versionType": "custom"}, {"lessThan": "23.2R2-EVO", "status": "affected", "version": "23.2", "versionType": "custom"}, {"lessThan": "23.4R2-EVO", "status": "affected", "version": "23.4", "versionType": "custom"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "This issue requires that SNMPv3 be configured. For example:<br><br><tt>[snmp engine-id use-default-ip-address]<br>[snmp v3 usm local-engine user &lt;username&gt; authentication-&lt;method&gt; ...]<br>[snmp v3 vacm security-to-group security-model usm security-name &lt;name&gt; group &lt;group&gt;]<br>[snmp v3 vacm access group &lt;group&gt; default-context-prefix security-model usm security-level &lt;level&gt; ...]</tt>"}], "value": "This issue requires that SNMPv3 be configured. For example:\n\n[snmp engine-id use-default-ip-address]\n[snmp v3 usm local-engine user <username> authentication-<method> ...]\n[snmp v3 vacm security-to-group security-model usm security-name <name> group <group>]\n[snmp v3 vacm access group <group> default-context-prefix security-model usm security-level <level> ...]"}], "datePublic": "2026-07-08T16:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "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.<br><br>Memory usage can be monitored using the following command:<br><br><tt>user@device&gt; show system processes extensive | match snmpd</tt><p>\n\n</p><p><br>This issue affects:</p><p>Junos OS:<br></p><ul><li>all versions before 21.2R3-S8;</li><li>from 21.4 before 21.4R3-S7;</li><li>from 22.1 before 22.1R3-S6;</li><li>from 22.2 before 22.2R3-S4;</li><li>from 22.3 before 22.3R3-S3;</li><li>from 22.4 before 22.4R3-S2;</li><li>from 23.2 before 23.2R2;</li><li>from 23.4 before 23.4R2.</li></ul><br>Junos OS Evolved:<br><ul><li>all versions before 21.2R3-S8-EVO;</li><li>from 21.4 before 21.4R3-S7-EVO;</li><li>all versions of 22.1-EVO,</li><li>from 22.2 before 22.2R3-S4-EVO;</li><li>from 22.3 before 22.3R3-S3-EVO;</li><li>all versions of 22.4-EVO,</li><li>from 23.2 before 23.2R2-EVO;</li><li>from 23.4 before 23.4R2-EVO.</li></ul><p></p>"}], "value": "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.\n\nMemory usage can be monitored using the following command:\n\nuser@device> show system processes extensive | match snmpd\n\n\n\n\nThis issue affects:\n\nJunos OS:\n\n\n * all versions before 21.2R3-S8;\n * from 21.4 before 21.4R3-S7;\n * from 22.1 before 22.1R3-S6;\n * from 22.2 before 22.2R3-S4;\n * from 22.3 before 22.3R3-S3;\n * from 22.4 before 22.4R3-S2;\n * from 23.2 before 23.2R2;\n * from 23.4 before 23.4R2.\n\n\n\nJunos OS Evolved:\n * all versions before 21.2R3-S8-EVO;\n * from 21.4 before 21.4R3-S7-EVO;\n * all versions of 22.1-EVO,\n * from 22.2 before 22.2R3-S4-EVO;\n * from 22.3 before 22.3R3-S3-EVO;\n * all versions of 22.4-EVO,\n * from 23.2 before 23.2R2-EVO;\n * from 23.4 before 23.4R2-EVO."}], "exploits": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}, {"cvssV4_0": {"Automatable": "YES", "Recovery": "AUTOMATIC", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 5.3, "baseSeverity": "MEDIUM", "privilegesRequired": "LOW", "providerUrgency": "GREEN", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "CONCENTRATED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/AU:Y/R:A/V:C/RE:M/U:Green", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "MODERATE"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper", "dateUpdated": "2026-07-09T21:02:31.614Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://supportportal.juniper.net/JSA110074"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 21.2R3-S8, 21.4R3-S7, 22.1R3-S6, 22.2R3-S4, 22.3R3-S3, 22.4R3-S2, 23.2R2, 23.4R2, 24.2R1, and all subsequent releases.\n<br>\nJunos OS Evolved: 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 23.2R2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases."}], "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 21.2R3-S8, 21.4R3-S7, 22.1R3-S6, 22.2R3-S4, 22.3R3-S3, 22.4R3-S2, 23.2R2, 23.4R2, 24.2R1, and all subsequent releases.\n\n\nJunos OS Evolved: 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 23.2R2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases."}], "source": {"advisory": "JSA110074", "defect": ["1769065"], "discovery": "USER"}, "title": "Junos OS and Junos OS Evolved: Receipt of a specific SNMPv3 request results in memory leak and eventual snmpd crash", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "There are no known workarounds for this issue.<br><br>To reduce the risk of malicious exploitation, use access lists or firewall filters to limit access to the device via SNMPv3 only from trusted hosts."}], "value": "There are no known workarounds for this issue.\n\nTo reduce the risk of malicious exploitation, use access lists or firewall filters to limit access to the device via SNMPv3 only from trusted hosts."}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}}}

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