Vulnerability-Lookup

GHSA-X7C3-Q65H-RWRM

Vulnerability from github – Published: 2026-07-09 21:31 – Updated: 2026-07-09 21:31

Details

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.

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

5.3 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-33799"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-09T21:16:54Z",
    "severity": "MODERATE"
  },
  "details": "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\u003e 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.",
  "id": "GHSA-x7c3-q65h-rwrm",
  "modified": "2026-07-09T21:31:21Z",
  "published": "2026-07-09T21:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33799"
    },
    {
      "type": "WEB",
      "url": "https://supportportal.juniper.net/JSA110074"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:C/RE:M/U:Green",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-33799 (GCVE-0-2026-33799)

Vulnerability from cvelistv5 – Published: 2026-07-09 21:02 – Updated: 2026-07-09 21:02

Title

Junos OS and Junos OS Evolved: Receipt of a specific SNMPv3 request results in memory leak and eventual snmpd crash

Summary

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.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

5.3 (Medium)


                        
                          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

CWE

CWE-787 - Out-of-bounds Write

Assigner

juniper

References

1 reference

URL	Tags
https://supportportal.juniper.net/JSA110074	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 0 , < 21.2R3-S8 (custom) Affected: 21.4 , < 21.4R3-S7 (custom) Affected: 22.1 , < 22.1R3-S6 (custom) Affected: 22.2 , < 22.2R3-S4 (custom) Affected: 22.3 , < 22.3R3-S3 (custom) Affected: 22.4 , < 22.4R3-S2 (custom) Affected: 23.2 , < 23.2R2 (custom) Affected: 23.4 , < 23.4R2 (custom)
Juniper Networks	Junos OS Evolved	Affected: 0 , < 21.2R3-S8-EVO (custom) Affected: 21.4 , < 21.4R3-S7-EVO (custom) Affected: 22.1 , < 22.1* (custom) Affected: 22.2 , < 22.2R3-S4-EVO (custom) Affected: 22.3 , < 22.3R3-S3-EVO (custom) Affected: 22.4 , < 22.4* (custom) Affected: 23.2 , < 23.2R2-EVO (custom) Affected: 23.4 , < 23.4R2-EVO (custom)

Date Public

2026-07-08 16:00

Show details on NVD website

JSON

To clipboard

{
  "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:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[snmp engine-id use-default-ip-address]\u003cbr\u003e[snmp v3 usm local-engine user \u0026lt;username\u0026gt; authentication-\u0026lt;method\u0026gt; ...]\u003cbr\u003e[snmp v3 vacm security-to-group security-model usm security-name \u0026lt;name\u0026gt; group \u0026lt;group\u0026gt;]\u003cbr\u003e[snmp v3 vacm access group \u0026lt;group\u0026gt; default-context-prefix security-model usm security-level \u0026lt;level\u0026gt; ...]\u003c/tt\u003e"
            }
          ],
          "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 \u003cusername\u003e authentication-\u003cmethod\u003e ...]\n[snmp v3 vacm security-to-group security-model usm security-name \u003cname\u003e group \u003cgroup\u003e]\n[snmp v3 vacm access group \u003cgroup\u003e default-context-prefix security-model usm security-level \u003clevel\u003e ...]"
        }
      ],
      "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.\u003cbr\u003e\u003cbr\u003eMemory usage can be monitored using the following command:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003euser@device\u0026gt; show system processes extensive | match snmpd\u003c/tt\u003e\u003cp\u003e\n\n\u003c/p\u003e\u003cp\u003e\u003cbr\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJunos OS:\u003cbr\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 21.2R3-S8;\u003c/li\u003e\u003cli\u003efrom 21.4 before 21.4R3-S7;\u003c/li\u003e\u003cli\u003efrom 22.1 before 22.1R3-S6;\u003c/li\u003e\u003cli\u003efrom 22.2 before 22.2R3-S4;\u003c/li\u003e\u003cli\u003efrom 22.3 before 22.3R3-S3;\u003c/li\u003e\u003cli\u003efrom 22.4 before 22.4R3-S2;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2;\u003c/li\u003e\u003cli\u003efrom 23.4 before 23.4R2.\u003c/li\u003e\u003c/ul\u003e\u003cbr\u003eJunos OS Evolved:\u003cbr\u003e\u003cul\u003e\u003cli\u003eall versions before 21.2R3-S8-EVO;\u003c/li\u003e\u003cli\u003efrom 21.4 before 21.4R3-S7-EVO;\u003c/li\u003e\u003cli\u003eall versions of 22.1-EVO,\u003c/li\u003e\u003cli\u003efrom 22.2 before 22.2R3-S4-EVO;\u003c/li\u003e\u003cli\u003efrom 22.3 before 22.3R3-S3-EVO;\u003c/li\u003e\u003cli\u003eall versions of 22.4-EVO,\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-EVO;\u003c/li\u003e\u003cli\u003efrom 23.4 before 23.4R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e"
            }
          ],
          "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\u003e 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": {
        "dateUpdated": "2026-07-09T21:02:31.614Z",
        "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "shortName": "juniper"
      },
      "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\u003cbr\u003e\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.\u003cbr\u003e\u003cbr\u003eTo 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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
    "assignerShortName": "juniper",
    "cveId": "CVE-2026-33799",
    "datePublished": "2026-07-09T21:02:31.614Z",
    "dateReserved": "2026-03-23T19:46:13.673Z",
    "dateUpdated": "2026-07-09T21:02:31.614Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-X7C3-Q65H-RWRM

CVE-2026-33799 (GCVE-0-2026-33799)

Tags

Sightings

Nomenclature