---
id: CVE-2026-8093
title: Memory safety bugs fixed in Thunderbird 150.0.2
summary: >-
  Memory safety bugs present in Thunderbird 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…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: adp
vendor: Mozilla
product: Firefox
affected:
  - Firefox
  - Thunderbird
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-05-08T03:55:46.999892Z'
published: '2026-05-07'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T13:50:22.175Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-8093'
references:
  - url: >-
      https://bugzilla.mozilla.org/buglist.cgi?bug_id=1981270%2C2027154%2C2028332%2C2029327%2C2029894%2C2032189%2C2034837%2C2035968%2C2036256
    label: Memory safety bugs fixed in Thunderbird 150.0.2
  - url: 'https://www.mozilla.org/security/advisories/mfsa2026-40/'
  - url: 'https://www.mozilla.org/security/advisories/mfsa2026-43/'
tags:
  - cve.org
epss: 0.00421
epssPercentile: 0.35128
ingestedAt: '2026-10-21T13:57:01.104Z'
---

## Overview

Memory safety bugs present in Thunderbird 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 and Thunderbird 150.0.2.

## Affected

- `Firefox`
- `Thunderbird`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.