{"id":"CVE-2026-96512","revision":"a4df36e70dfe4cf7aae001bfd49bf6da","records":[{"revision":"a4df36e70dfe4cf7aae001bfd49bf6da","observedAt":"2026-10-26T15:35:30.984+00:00","statement":{"source":"cve-program","id":"CVE-2026-96512","aliases":[],"title":"Sudo: sudo: tz environment variable allows bypass of notbefore/notafter time-based authorization","description":"A flaw was found in sudo. When sudoers rules use NOTBEFORE or NOTAFTER time-based access restrictions with timestamps that omit the trailing 'Z' timezone indicator, the time evaluation relies on the TZ environment variable inherited from the calling user. Because sudo is a setuid-root program, an unprivileged local user can set TZ to an extreme timezone offset to shift the authorization window by up to approximately 25 hours, causing expired rules to be treated as valid. This allows the user to execute commands outside the intended time window. Authentication is not bypassed; only the time-based authorization check is affected.","state":0,"publishedAt":"2026-09-23T13:22:33.08+00:00","modifiedAt":"2026-10-26T13:55:30.14+00:00","affected":[{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 10\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.17-10.p2.el10_2.7\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/o:redhat:enterprise_linux:10.2\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 10.0 Extended Update Support\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.15-8.p5.el10_0.5\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/o:redhat:enterprise_linux_eus:10.0\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 8\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.5p2-2.el8_10\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/o:redhat:enterprise_linux:8::baseos\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 8.8 Telecommunications Update Service\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.5p2-1.el8_8.4\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/o:redhat:rhel_e4s:8.8::baseos\",\n                        \"cpe:/o:redhat:rhel_tus:8.8::baseos\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.5p2-1.el8_8.4\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/o:redhat:rhel_e4s:8.8::baseos\",\n                        \"cpe:/o:redhat:rhel_tus:8.8::baseos\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 9\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.17p2-3.el9_8.3\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:enterprise_linux:9::appstream\",\n                        \"cpe:/o:redhat:enterprise_linux:9::baseos\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 9\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.17p2-3.el9_8.3\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:enterprise_linux:9::appstream\",\n                        \"cpe:/o:redhat:enterprise_linux:9::baseos\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.5p2-9.el9_2.5\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:rhel_e4s:9.2::appstream\",\n                        \"cpe:/o:redhat:rhel_e4s:9.2::baseos\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.5p2-10.el9_4.4\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:rhel_e4s:9.4::appstream\",\n                        \"cpe:/o:redhat:rhel_e4s:9.4::baseos\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 9.6 Extended Update Support\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0:1.9.5p2-10.el9_6.4\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:rhel_eus:9.6::appstream\",\n                        \"cpe:/o:redhat:rhel_eus:9.6::baseos\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"sudo-main","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Hardened Images\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"sudo-main\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1.9.17-16.p2.2.hum1\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:hummingbird:1\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"rhui5/installer-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Update Infrastructure 5\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"rhui5/installer-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1791964013\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:rhui:5::el9\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"rhui5/rhua-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Update Infrastructure 5\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"rhui5/rhua-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1791978693\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:rhui:5::el9\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"sudo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Enterprise Linux 7\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"sudo\",\n                    \"defaultStatus\": \"affected\",\n                    \"cpes\": [\n                        \"cpe:/o:redhat:enterprise_linux:7\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://access.redhat.com/errata/RHSA-2026:71609","https://access.redhat.com/errata/RHSA-2026:75571","https://access.redhat.com/errata/RHSA-2026:75579","https://access.redhat.com/errata/RHSA-2026:75580","https://access.redhat.com/errata/RHSA-2026:82939","https://access.redhat.com/errata/RHSA-2026:86633","https://access.redhat.com/errata/RHSA-2026:86634","https://access.redhat.com/errata/RHSA-2026:86635","https://access.redhat.com/errata/RHSA-2026:87026","https://access.redhat.com/errata/RHSA-2026:90287","https://access.redhat.com/security/cve/CVE-2026-96512","https://bugzilla.redhat.com/show_bug.cgi?id=2539327","https://github.com/sudo-project/sudo/commit/1820a349687522f51023d1ae5925125f59679a8c"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-96512","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-96512","identifiers":["CVE-2026-96512"]},"retained":false,"historicalAffected":[]}],"coverage":[]}