{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16445", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-07-21T08:23:53.560Z", "datePublished": "2026-07-21T12:51:08.650Z", "dateUpdated": "2026-07-21T12:57:52.309Z"}, "containers": {"cna": {"title": "Dracut: dracut: root code execution via dhcp options command injection in networkmanager initrd module", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP options, such as a malicious root-path, next-server, or bootfile name, to a system using dracut's NetworkManager-based initrd network module. These options are improperly handled and written into a temporary shell script without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs during system boot."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "dracut", "defaultStatus": "affected", "versions": [{"version": "0:049-244.git20260529.el8_10", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/o:redhat:enterprise_linux:8::baseos"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "dracut", "defaultStatus": "unaffected", "cpes": ["cpe:/o:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "dracut", "defaultStatus": "unaffected", "cpes": ["cpe:/o:redhat:enterprise_linux:6"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "dracut", "defaultStatus": "unaffected", "cpes": ["cpe:/o:redhat:enterprise_linux:7"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "dracut", "defaultStatus": "unaffected", "cpes": ["cpe:/o:redhat:enterprise_linux:9"]}, {"vendor": "Red Hat", "product": "Red Hat Hardened Images", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "dracut", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:hummingbird:1"]}, {"vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "dracut", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift:4"]}], "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:26534", "name": "RHSA-2026:26534", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2026-16445", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2459963"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503147", "name": "RHBZ#2503147", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://github.com/dracutdevs/dracut/commit/e509c638e6"}], "datePublic": "2026-07-21T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "description": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "workarounds": [{"lang": "en", "value": "Escape DHCP-derived values (root-path, next-server, dhcp-bootfile) with shell-safe quoting (for example printf '%q') before writing them to the generated dhcpopts file in modules.d/35network-manager/nm-run.sh. This approach is already used in dracut-057 and later, and is already present in the RHEL 8.10.z dracut-049-244.git20260529.el8_10 build."}], "timeline": [{"lang": "en", "time": "2026-05-29T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-07-21T00:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "This issue was discovered by Pavel Valena (Red Hat)."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-07-21T12:57:52.309Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

{}

{}

{}

{}