CVE-2026-8092: Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we…

PriorityP348high8.1CVSS 3.1

AVNACHPRNUINSUCHIHAH

EPSS

0.38%

31.0th percentile

Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.

Affected

12 ranges

Vendor	Product	Version range	Fixed in
mozilla	firefox	< Firefox 150.0.2	Firefox 150.0.2
mozilla	firefox	< 115.35.2	115.35.2
mozilla	firefox	—	—
mozilla	firefox	>= 140.0 < 140.10.2	140.10.2
mozilla	firefox	>= 150.0 < 150.0.2	150.0.2
mozilla	firefox_esr	< Firefox ESR 115.35.2	Firefox ESR 115.35.2
mozilla	firefox_esr	< Firefox ESR 140.10.2	Firefox ESR 140.10.2
mozilla	thunderbird	< Thunderbird 150.0.2	Thunderbird 150.0.2
mozilla	thunderbird	< Thunderbird 140.10.2	Thunderbird 140.10.2
mozilla	thunderbird	>= 140.0 < 140.10.2	140.10.2
mozilla	thunderbird	>= 150.0 < 150.0.2	150.0.2
rhel10	firefox-flatpak	—	—

CVSS provenance

nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

vendor_redhat8.1HIGH

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