Multiple Mozilla Products Vulnerabilities

Severity

High

Analysis Summary

CVE-2025-5986 CVSS:8.1

Mozilla Thunderbird could allow a remote attacker to obtain sensitive information, caused by an error while using mailbox:/// links. By persuading a victim to download a specially crafted .pdf file, an attacker could exploit this vulnerability to download files, exhaust disk space or to leak hashed Windows credentials.

CVE-2025-49709 CVSS:8.8

Mozilla Firefox could allow a remote attacker to execute arbitrary code on the system, caused by memory corruption in canvas surfaces. By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability using unknown attack vectors to execute arbitrary code on the vulnerable system or cause a denial of service.

CVE-2025-49710 CVSS:8.8

Mozilla Firefox could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow in OrderedHashTable used by the JavaScript engine. By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability using unknown attack vectors to execute arbitrary code on the vulnerable system or cause a denial of service.

CVE-2025-5267 CVSS:6.7

Mozilla Firefox could allow a remote attacker to conduct clickjacking attack. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to trick a user into leaking saved payment card details to a malicious page.

CVE-2025-5268 CVSS:8.8

Mozilla Firefox could allow a remote attacker to execute arbitrary code on the system, caused by memory safety bugs within the browser engine. By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability using unknown attack vectors to execute arbitrary code on the vulnerable system or cause a denial of service.

CVE-2025-5269 CVSS:8.8

CVE-2025-5270 CVSS:6.5

Mozilla Firefox could allow a remote attacker to obtain sensitive information, caused by SNI being sent unencrypted even when encrypted DNS was enabled. By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability using unknown attack vectors to obtain sensitive information.

CVE-2025-5271 CVSS:4.3

Mozilla Firefox is vulnerable to a content injection attack when previewing a response in Devtools ignored CSP headers.

Impact