FeedVulnerabilityMultiple Vulnerabilities in Mozilla Products Could Allow for...
VulnerabilityCIS Advisories
9.8CRITICAL

Multiple Vulnerabilities in Mozilla Products Could Allow for Arbitrary Code Execution

📅 7 May 2026 at 16:18 UTC📰 CIS AdvisoriesView original source ↗

Multiple vulnerabilities have been discovered in Mozilla products, the most severe of which could allow for arbitrary code execution. Mozilla Firefox is a web browser used to access the Internet.Mozilla Firefox ESR is a version of the web browser intended to be deployed in large organizations.Successful exploitation of the most severe of these vulnerabilities could allow for arbitrary code execution. Depending on the privileges associated with the user an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

Multiple vulnerabilities in Mozilla products, including Firefox and Thunderbird, could allow for arbitrary code execution, posing a significant risk to users with administrative privileges.

⚙️Technical Details
CVEs
CVE-2026-8090CVE-2026-8091CVE-2026-8092CVE-2026-8093CVE-2026-8094
Affected Systems
Firefox versions prior to 150.0.2Firefox ESR versions prior to 140.10.2Firefox ESR versions prior to 115.35.2Thunderbird versions prior to 150.0.2Thunderbird versions prior to 140.10.2
Attack Vectors
NETWORK
💥Impact Assessment
Severity: CRITICAL
🛡️Recommended Actions
1Apply appropriate updates provided by Mozilla to vulnerable systems immediately after testing.
2Establish and maintain a documented vulnerability management process for enterprise assets.
3Perform application updates on enterprise assets through automated patch management on a monthly, or more frequent, basis.
📦Affected Products
Mozilla FirefoxMozilla ThunderbirdThunderbird
🔐NVD Verified DataVERIFIED
CVE-2026-8090CVSS 7.3HIGH
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weaknesses
CWE-416
Affected Products (CPE)
Mozilla FirefoxMozilla Thunderbird
CVE-2026-8091CVSS 9.8CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-754
CVE-2026-8092CVSS 8.1HIGH
Attack Vector
NETWORK
Complexity
HIGH
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416CWE-787CWE-125
CVE-2026-8093CVSS 8.1HIGH
Attack Vector
NETWORK
Complexity
HIGH
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-119
CVE-2026-8094CVSS 9.8CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-94

Read the full article

This is a curated summary. The complete article is available at CIS Advisories.

Read on CIS Advisories
← Back to feed