{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-57022", "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "state": "PUBLISHED", "assignerShortName": "juniper", "dateReserved": "2026-06-23T16:27:00.248Z", "datePublished": "2026-07-09T21:06:06.154Z", "dateUpdated": "2026-07-09T21:06:06.154Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["MX Series with SPC3", "SRX5k Series with\u00a0SPC3", "SRX1600 Series", "SRX2300 Series", "SRX4000 Series", "vSRX Series"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "23.2R2-S4", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "23.4R2-S5", "status": "affected", "version": "23.4", "versionType": "custom"}, {"lessThan": "24.2R2", "status": "affected", "version": "24.2", "versionType": "custom"}]}], "datePublic": "2026-07-08T16:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).<br><br>When an affected device initiates a TCP connection to an attacker-controlled system that responds with a specific packet, this causes a PFE crash and restart, which affects all services until the system has automatically recovered.<br>This issue can happen among others in the following scenarios: ALG, SSL proxy, UTM, RTLOG, AppQoE probing, AAMW, ICAP, URL filtering.<br><br>This issue affects Junos OS on MX Series with SPC3, SRX5k Series with&nbsp;SPC3, SRX1600 Series, SRX2300 Series, SRX4000 Series, and vSRX Series:<br><br><ul><li>all versions before 23.2R2-S4,</li><li>23.4 versions before 23.4R2-S5,</li><li>24.2 versions before 24.2R2.</li></ul>"}], "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\nWhen an affected device initiates a TCP connection to an attacker-controlled system that responds with a specific packet, this causes a PFE crash and restart, which affects all services until the system has automatically recovered.\nThis issue can happen among others in the following scenarios: ALG, SSL proxy, UTM, RTLOG, AppQoE probing, AAMW, ICAP, URL filtering.\n\nThis issue affects Junos OS on MX Series with SPC3, SRX5k Series with\u00a0SPC3, SRX1600 Series, SRX2300 Series, SRX4000 Series, and vSRX Series:\n\n * all versions before 23.2R2-S4,\n * 23.4 versions before 23.4R2-S5,\n * 24.2 versions before 24.2R2."}], "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": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}, {"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "AUTOMATIC", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 8.2, "baseSeverity": "HIGH", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A/RE:M", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "MODERATE"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-754", "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper", "dateUpdated": "2026-07-09T21:06:06.154Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://supportportal.juniper.net/JSA110082"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "The following software releases have been updated to resolve this specific issue: 22.4R3-S8, 23.2R2-S4, 23.4R2-S5, 24.2R2, 24.4R1, and all subsequent releases."}], "value": "The following software releases have been updated to resolve this specific issue: 22.4R3-S8, 23.2R2-S4, 23.4R2-S5, 24.2R2, 24.4R1, and all subsequent releases."}], "source": {"advisory": "JSA110082", "defect": ["1833415"], "discovery": "USER"}, "title": "Junos OS: MX Series with SPC3, SRX Series: Specific packet in response to a TCP connection establishment by the affected device can crash the PFE", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "There are no known workarounds for this issue."}], "value": "There are no known workarounds for this issue."}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}}}

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{"affected": [{"configurations": [{"platform": ["mx_series_with_spc3", "srx5k_series_with\u00a0spc3", "srx1600_series", "srx2300_series", "srx4000_series", "vsrx_series"], "status": "affected", "versions": {"scheme": "generic", "value": "[0,23.2R2-S4)"}}, {"platform": ["mx_series_with_spc3", "srx5k_series_with\u00a0spc3", "srx1600_series", "srx2300_series", "srx4000_series", "vsrx_series"], "status": "affected", "versions": {"scheme": "generic", "value": "[23.4,23.4R2-S5)"}}, {"platform": ["mx_series_with_spc3", "srx5k_series_with\u00a0spc3", "srx1600_series", "srx2300_series", "srx4000_series", "vsrx_series"], "status": "affected", "versions": {"scheme": "generic", "value": "[24.2,24.2R2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Junos OS", "source": "cna", "vendor": "Juniper Networks"}, "product": "junos_os", "vendor": "juniper_networks"}], "created": "2026-07-10T00:30:06.903612+00:00", "updated": "2026-07-10T00:30:06.903636+00:00", "vendors": ["juniper_networks", "juniper_networks$PRODUCT$junos_os"]}