CVE-2026-2769

HIGH
2026-02-24 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch Released
Apr 10, 2026 - 08:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 24, 2026 - 14:16 nvd
HIGH 8.8

Tags

Use After Free Thunderbird Firefox Redhat Suse

Description

Use-after-free in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Analysis

A use-after-free vulnerability in the IndexedDB storage component of Firefox and Thunderbird allows remote attackers to achieve arbitrary code execution through user interaction. Affected versions include Firefox below 148, Firefox ESR below 115.33 and 140.8, and Thunderbird below 148 and 140.8. …

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Remediation

Within 24 hours: Inventory all systems running affected Firefox versions (<148), Firefox ESR (<115.33, <140.8), Thunderbird (<148, <140.8) and communicate risk to end users. Within 7 days: Implement disable of IndexedDB functionality via group policy or configuration management where business operations permit, or restrict browser usage to approved trusted sites only. …

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Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +44
POC: 0

Vendor Status

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CVE-2026-2769 vulnerability details – vuln.today
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