{"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"}}}}