CVE-2026-96512

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2026
Source publication: Sep 23, 2026
Source updated: Oct 22, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Sudo: sudo: tz environment variable allows bypass of notbefore/notafter time-based authorization

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.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Red Hat Enterprise Linux 10

Vendor: Red Hat
Product: Red Hat Enterprise Linux 10
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 10 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.17-10.p2.el10_2.7	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 10.0 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 10.0 Extended Update Support
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 10.0 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.15-8.p5.el10_0.5	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.5p2-2.el8_10	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.8 Telecommunications Update Service · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.5p2-1.el8_8.4	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.5p2-1.el8_8.4	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.17p2-3.el9_8.3	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.17p2-3.el9_8.3	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.5p2-10.el9_4.4	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.6 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.6 Extended Update Support
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.6 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.5p2-10.el9_6.4	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Hardened Images

Vendor: Red Hat
Product: Red Hat Hardened Images
Platforms: Unknown
Default status: affected
Package: sudo-main
Package collection: https://catalog.redhat.com/software/containers/

Red Hat Hardened Images · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1.9.17-16.p2.2.hum1	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Update Infrastructure 5

Vendor: Red Hat
Product: Red Hat Update Infrastructure 5
Platforms: Unknown
Default status: affected
Package: rhui5/installer-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat Update Infrastructure 5 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1791964013	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Update Infrastructure 5

Vendor: Red Hat
Product: Red Hat Update Infrastructure 5
Platforms: Unknown
Default status: affected
Package: rhui5/rhua-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat Update Infrastructure 5 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1791978693	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 7

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7
Platforms: Unknown
Default status: affected
Package: sudo
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.