# CVE-2026-96512: Sudo: sudo: tz environment variable allows bypass of notbefore/notafter time-based authorization CVE-2026-96512 is fixed in 10 products on 1 platform, first by libnss-sudo 1.9.17p2-1ubuntu3.2, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-96512 - Priority: High - CVSS: 7.8 (Important) - EPSS: 0.0032 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 23, 2026 - Weakness: Incorrect Authorization - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96512 ## Description The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root. Security Fix(es): * sudo: sudo: TZ environment variable allows bypass of NOTBEFORE/NOTAFTER time-based authorization (CVE-2026-96512) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libnss-sudo Ubuntu 24.04.5 LTS (noble) | 1.9.15p5-3ubuntu5.24.04.4 | [libnss-sudo 1.9.15p5-3ubuntu5.24.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libnss-sudo-1.9.15p5-3ubuntu5.24.04.4.md) | Oct 8, 2026 | | Linux | libnss-sudo Ubuntu 26.04.1 LTS (resolute) | 1.9.17p2-1ubuntu3.2 | [libnss-sudo 1.9.17p2-1ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libnss-sudo-1.9.17p2-1ubuntu3.2.md) | Sep 23, 2026 | | Linux | sudo Debian 14 | 1.9.17p2-9 | [DEBIAN-CVE-2026-96512](https://patchblox.com/security/data/fix/linux/debian-cve-2026-96512.md) | Oct 5, 2026 | | Linux | sudo RHEL 10 | 1.9.15-8.p5.el10_0.5 | [RHSA-2026:86633](https://patchblox.com/security/data/fix/linux/rhsa-2026-86633.md) | Oct 5, 2026 | | Linux | sudo RHEL 8 | 0:1.9.5p2-2.el8_10 | [RHSA-2026:75580](https://patchblox.com/security/data/fix/linux/rhsa-2026-75580.md) | Oct 5, 2026 | | Linux | sudo RHEL 9 | 0:1.9.17p2-3.el9_8.3 | [RHSA-2026:75571](https://patchblox.com/security/data/fix/linux/rhsa-2026-75571.md) | Oct 5, 2026 | | Linux | sudo Ubuntu 22.04.1 LTS (jammy) | 1.9.9-1ubuntu2.7 | [sudo 1.9.9-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-sudo-1.9.9-1ubuntu2.7.md) | Oct 8, 2026 | | Linux | sudo Ubuntu 24.04.5 LTS (noble) | 1.9.15p5-3ubuntu5.24.04.4 | [sudo 1.9.15p5-3ubuntu5.24.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-sudo-1.9.15p5-3ubuntu5.24.04.4.md) | Oct 8, 2026 | | Linux | sudo Ubuntu 26.04.1 LTS (resolute) | 1.9.17p2-1ubuntu3.2 | [sudo 1.9.17p2-1ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-sudo-1.9.17p2-1ubuntu3.2.md) | Sep 23, 2026 | | Linux | sudo almalinux 10 | 1.9.17-10.p2.el10_2.7 | [ALSA-2026:75579](https://patchblox.com/security/data/fix/linux/alsa-2026-75579.md) | Oct 5, 2026 | | Linux | sudo almalinux 8 | 1.9.5p2-2.el8_10 | [ALSA-2026:75580](https://patchblox.com/security/data/fix/linux/alsa-2026-75580.md) | Oct 5, 2026 | | Linux | sudo almalinux 9 | 1.9.17p2-3.el9_8.3 | [ALSA-2026:75571](https://patchblox.com/security/data/fix/linux/alsa-2026-75571.md) | Oct 5, 2026 | | Linux | sudo amzn 2023 | 1.9.15-1.p5.amzn2023.0.4 | [ALAS2023-2026-3156](https://patchblox.com/security/data/fix/linux/alas2023-2026-3156.md) | Nov 7, 2026 | | Linux | sudo ol 10 | 0:1.9.17-10.p2.el10_2.7 | [ELSA-2026-75579](https://patchblox.com/security/data/fix/linux/elsa-2026-75579.md) | Oct 6, 2026 | | Linux | sudo ol 8 | 0:1.9.5p2-2.0.1.el8_10 | [ELSA-2026-75580](https://patchblox.com/security/data/fix/linux/elsa-2026-75580.md) | Oct 5, 2026 | | Linux | sudo ol 9 | 0:1.9.17p2-3.el9_8.3 | [ELSA-2026-75571](https://patchblox.com/security/data/fix/linux/elsa-2026-75571.md) | Oct 5, 2026 | | Linux | sudo rocky 10 | 0:1.9.17-10.p2.el10_2.7 | [RLSA-2026:75579](https://patchblox.com/security/data/fix/linux/rlsa-2026-75579.md) | Oct 6, 2026 | | Linux | sudo rocky 8 | 0:1.9.5p2-2.el8_10 | [RLSA-2026:75580](https://patchblox.com/security/data/fix/linux/rlsa-2026-75580.md) | Oct 6, 2026 | | Linux | sudo rocky 9 | 0:1.9.17p2-3.el9_8.3 | [RLSA-2026:75571](https://patchblox.com/security/data/fix/linux/rlsa-2026-75571.md) | Oct 6, 2026 | | Linux | sudo-debuginfo amzn 2023 | 1.9.15-1.p5.amzn2023.0.4 | [ALAS2023-2026-3156](https://patchblox.com/security/data/fix/linux/alas2023-2026-3156.md) | Nov 7, 2026 | | Linux | sudo-debugsource amzn 2023 | 1.9.15-1.p5.amzn2023.0.4 | [ALAS2023-2026-3156](https://patchblox.com/security/data/fix/linux/alas2023-2026-3156.md) | Nov 7, 2026 | | Linux | sudo-devel amzn 2023 | 1.9.15-1.p5.amzn2023.0.4 | [ALAS2023-2026-3156](https://patchblox.com/security/data/fix/linux/alas2023-2026-3156.md) | Nov 7, 2026 | | Linux | sudo-ldap Ubuntu 22.04.1 LTS (jammy) | 1.9.9-1ubuntu2.7 | [sudo-ldap 1.9.9-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-sudo-ldap-1.9.9-1ubuntu2.7.md) | Oct 8, 2026 | | Linux | sudo-ldap Ubuntu 24.04.5 LTS (noble) | 1.9.15p5-3ubuntu5.24.04.4 | [sudo-ldap 1.9.15p5-3ubuntu5.24.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-sudo-ldap-1.9.15p5-3ubuntu5.24.04.4.md) | Oct 8, 2026 | | Linux | sudo-logsrvd amzn 2023 | 1.9.15-1.p5.amzn2023.0.4 | [ALAS2023-2026-3156](https://patchblox.com/security/data/fix/linux/alas2023-2026-3156.md) | Nov 7, 2026 | | Linux | sudo-logsrvd-debuginfo amzn 2023 | 1.9.15-1.p5.amzn2023.0.4 | [ALAS2023-2026-3156](https://patchblox.com/security/data/fix/linux/alas2023-2026-3156.md) | Nov 7, 2026 | | Linux | sudo-python-plugin RHEL 9 | 0:1.9.17p2-3.el9_8.3 | [RHSA-2026:75571](https://patchblox.com/security/data/fix/linux/rhsa-2026-75571.md) | Oct 5, 2026 | | Linux | sudo-python-plugin almalinux 10 | 1.9.17-10.p2.el10_2.7 | [ALSA-2026:75579](https://patchblox.com/security/data/fix/linux/alsa-2026-75579.md) | Oct 5, 2026 | | Linux | sudo-python-plugin almalinux 9 | 1.9.17p2-3.el9_8.3 | [ALSA-2026:75571](https://patchblox.com/security/data/fix/linux/alsa-2026-75571.md) | Oct 5, 2026 | | Linux | sudo-python-plugin amzn 2023 | 1.9.15-1.p5.amzn2023.0.4 | [ALAS2023-2026-3156](https://patchblox.com/security/data/fix/linux/alas2023-2026-3156.md) | Nov 7, 2026 | | Linux | sudo-python-plugin ol 10 | 0:1.9.17-10.p2.el10_2.7 | [ELSA-2026-75579](https://patchblox.com/security/data/fix/linux/elsa-2026-75579.md) | Oct 6, 2026 | | Linux | sudo-python-plugin ol 9 | 0:1.9.17p2-3.el9_8.3 | [ELSA-2026-75571](https://patchblox.com/security/data/fix/linux/elsa-2026-75571.md) | Oct 5, 2026 | | Linux | sudo-python-plugin-debuginfo amzn 2023 | 1.9.15-1.p5.amzn2023.0.4 | [ALAS2023-2026-3156](https://patchblox.com/security/data/fix/linux/alas2023-2026-3156.md) | Nov 7, 2026 | --- Data as of 2026-11-08T13:06:02Z UTC. 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