CVE-2026-101934

An Out-of-bounds Write vulnerability in eventd of Juniper Networks Junos OS and Junos OS Evolved allows a local attacker to cause a Denial of Service (DoS) via sending a crafted packet to the eventd relay service.

CVSS v3 4.4 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://supportportal.juniper.net/JSA112187
https://supportportal.juniper.net/JSA112250

Configurations

No configuration.

History

14 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 17:17

Updated : 2026-10-15 16:23

NVD link : CVE-2026-101934

Mitre link : CVE-2026-101934

CVE.ORG link : CVE-2026-101934

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2026-101934", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-101934", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-14T20:15:33.465764Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "sirt@juniper.net", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 0.8}], "cvssMetricV40": [{"type": "Secondary", "source": "sirt@juniper.net", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "AUTOMATIC", "baseScore": 6.7, "Automatable": "YES", "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "valueDensity": "CONCENTRATED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "MODERATE", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "sirt@juniper.net", "affectedData": [{"vendor": "Juniper Networks", "product": "Junos OS", "versions": [{"status": "affected", "version": "0", "lessThan": "23.2R2-S7.7", "versionType": "custom"}, {"status": "affected", "version": "23.4", "lessThan": "23.4R2-S8.13", "versionType": "custom"}, {"status": "affected", "version": "24.2", "lessThan": "24.2R2-S5.5", "versionType": "custom"}, {"status": "affected", "version": "24.4", "lessThan": "24.4R2-S5", "versionType": "custom"}, {"status": "affected", "version": "25.2", "lessThan": "25.2R2-S2", "versionType": "custom"}, {"status": "affected", "version": "25.4", "lessThan": "25.4R1-S3", "versionType": "custom"}, {"status": "affected", "version": "26.2", "lessThan": "26.2R1-S2", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Juniper Networks", "product": "Junos OS Evolved", "versions": [{"status": "affected", "version": "0", "lessThan": "23.2R2-S7.7-EVO", "versionType": "custom"}, {"status": "affected", "version": "23.4", "lessThan": "23.4R2-S8.11-EVO", "versionType": "custom"}, {"status": "affected", "version": "24.2", "lessThan": "24.2R2-S5.6-EVO", "versionType": "custom"}, {"status": "affected", "version": "24.4", "lessThan": "24.4R2-S5-EVO", "versionType": "custom"}, {"status": "affected", "version": "25.2", "lessThan": "25.2R2-S2-EVO", "versionType": "custom"}, {"status": "affected", "version": "25.4", "lessThan": "25.4R1-S3-EVO", "versionType": "custom"}, {"status": "affected", "version": "26.2", "lessThan": "26.2R1-S2-EVO", "versionType": "custom"}, {"status": "affected", "version": "23.4X100", "versionType": "custom"}, {"status": "affected", "version": "25.2X100", "lessThan": "25.2X100-D35-EVO", "versionType": "custom"}, {"status": "affected", "version": "25.4X300", "lessThan": "25.4X300-D40-EVO", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-14T17:17:45.763", "references": [{"url": "https://supportportal.juniper.net/JSA112187", "source": "sirt@juniper.net"}, {"url": "https://supportportal.juniper.net/JSA112250", "source": "sirt@juniper.net"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "sirt@juniper.net", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "An Out-of-bounds Write vulnerability in eventd of Juniper Networks Junos OS and Junos OS Evolved allows a local attacker to cause a Denial of Service (DoS) via sending a crafted packet to the eventd relay service."}], "lastModified": "2026-10-15T16:23:06.250", "sourceIdentifier": "sirt@juniper.net"}