{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-101276", "assignerOrgId": "98a01053-8a31-4f6d-9aa9-252be161adc6", "state": "PUBLISHED", "assignerShortName": "Anthropic", "dateReserved": "2026-09-28T11:52:18.066Z", "datePublished": "2026-09-30T21:11:52.046Z", "dateUpdated": "2026-10-01T15:51:00.728Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "98a01053-8a31-4f6d-9aa9-252be161adc6", "shortName": "Anthropic", "dateUpdated": "2026-09-30T21:13:21.540Z" }, "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-416", "description": "CWE-416 Use after free", "type": "CWE" } ] } ], "impacts": [ { "capecId": "CAPEC-456", "descriptions": [ { "lang": "en", "value": "CAPEC-456 Infected Memory" } ] } ], "affected": [ { "vendor": "esnet", "product": "iperf3", "versions": [ { "status": "affected", "version": "3.21" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "iperf3 3.21 (esnet/iperf) contains a remote, unauthenticated heap use-after-free: the server's per-test watchdog server_timer_proc() frees streams without cancelling/joining their worker threads, so a blocked worker dereferences a freed iperf_stream; fixed in 3.22.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "iperf3 3.21 (esnet/iperf) contains a remote, unauthenticated heap use-after-free: the server's per-test watchdog server_timer_proc() frees streams without cancelling/joining their worker threads, so a blocked worker dereferences a freed iperf_stream; fixed in 3.22." } ] } ], "references": [ { "url": "https://newreleases.io/project/github/esnet/iperf/release/3.22", "tags": [ "release-notes" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.2, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N" } } ], "credits": [ { "lang": "en", "value": "Anthropic", "type": "finder" }, { "lang": "en", "value": "Ada Logics", "type": "reporter" } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 1.0.5" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-01T15:50:45.814450Z", "id": "CVE-2026-101276", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-01T15:51:00.728Z" } } ] } }