CVE-2026-33792

A Stack-based Buffer Overflow vulnerability in the srxpfe process of Juniper Networks Junos OS on SRX Series allows an unauthenticated network attacker to execute code as root or cause a denial of service via a crafted packet received on a configured GRE tunnel.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://supportportal.juniper.net/JSA112186

Configurations

No configuration.

History

14 Oct 2026, 17:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 17:18

Updated : 2026-10-15 16:24

NVD link : CVE-2026-33792

Mitre link : CVE-2026-33792

CVE.ORG link : CVE-2026-33792

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

{"id": "CVE-2026-33792", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33792", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-14T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "sirt@juniper.net", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "sirt@juniper.net", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "AUTOMATIC", "baseScore": 9.3, "Automatable": "YES", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "CONCENTRATED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "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"}], "platforms": ["SRX Series"], "defaultStatus": "unaffected"}]}], "published": "2026-10-14T17:18:27.933", "references": [{"url": "https://supportportal.juniper.net/JSA112186", "source": "sirt@juniper.net"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "sirt@juniper.net", "description": [{"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "A Stack-based Buffer Overflow vulnerability in the srxpfe process of Juniper Networks Junos OS on SRX Series allows an unauthenticated network attacker to execute code as root or cause a denial of service via a crafted packet received on a configured GRE tunnel."}], "lastModified": "2026-10-15T16:24:19.073", "sourceIdentifier": "sirt@juniper.net"}