{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-122192", "assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "state": "PUBLISHED", "assignerShortName": "AMZN", "dateReserved": "2026-11-04T19:28:11.100Z", "datePublished": "2026-11-04T19:35:51.555Z", "dateUpdated": "2026-11-04T19:35:51.555Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "shortName": "AMZN", "dateUpdated": "2026-11-04T19:35:51.555Z"}, "title": "Guest access to Firecracker process memory after a failed memory discard", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-390", "description": "CWE-390 Detection of error condition without action", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-825", "description": "CWE-825 Expired pointer dereference", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-130", "descriptions": [{"lang": "en", "value": "CAPEC-130 Excessive Allocation"}]}, {"capecId": "CAPEC-129", "descriptions": [{"lang": "en", "value": "CAPEC-129 Pointer Manipulation"}]}], "affected": [{"vendor": "AWS", "product": "firecracker", "versions": [{"status": "affected", "version": "0.23.0", "lessThan": "1.16.2", "versionType": "custom"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:aws:firecracker:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.23.0", "versionEndExcluding": "1.16.2"}]}]}], "descriptions": [{"lang": "en", "value": "Improper handling of a failed memory remap in Firecracker versions 0.23.0 through 1.16.1 might allow a guest user with root privileges to read or modify Firecracker VMM process memory via balloon or virtio-mem discard requests on microVMs restored from a snapshot with the File memory backend, if the host fails to create the replacement mapping.\n\n\n\nTo remediate this issue, users should upgrade to Firecracker 1.16.2 or 1.17.0 and later.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Improper handling of a failed memory remap in Firecracker versions 0.23.0 through 1.16.1 might allow a guest user with root privileges to read or modify Firecracker VMM process memory via balloon or virtio-mem discard requests on microVMs restored from a snapshot with the File memory backend, if the host fails to create the replacement mapping.</p><p>To remediate this issue, users should upgrade to Firecracker 1.16.2 or 1.17.0 and later.</p>"}]}], "references": [{"url": "https://github.com/firecracker-microvm/firecracker/releases/tag/v1.16.2", "tags": ["release-notes", "patch"]}, {"url": "https://github.com/firecracker-microvm/firecracker/releases/tag/v1.17.0", "tags": ["release-notes", "patch"]}, {"url": "https://aws.amazon.com/security/security-bulletins/2026-169-aws/", "tags": ["vendor-advisory"]}, {"url": "https://github.com/firecracker-microvm/firecracker/security/advisories/GHSA-48ww-rqpp-2mgm", "tags": ["third-party-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "HIGH", "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": "HIGH", "baseScore": 7.1, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "Coinspect", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 0.5.0"}}}}

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