// For flags

CVE-2025-5263

firefox: thunderbird: Error handling for script execution was incorrectly isolated from web content

Severity Score

4.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11.

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Error handling for script execution is incorrectly isolated from web content, which could allow cross-origin leak attacks.

An update for firefox is now available for Red Hat Enterprise Linux 10. Issues addressed include code execution and script execution vulnerabilities.

*Credits: terjanq
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-05-27 CVE Reserved
  • 2025-05-27 CVE Published
  • 2025-05-27 CVE Updated
  • 2025-06-06 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-346: Origin Validation Error
  • CWE-829: Inclusion of Functionality from Untrusted Control Sphere
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mozilla
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Firefox
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*-
Affected
Mozilla
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Firefox Esr
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*-
Affected
Mozilla
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Thunderbird
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*-
Affected
Oracle
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Linux
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*-
Affected
Redhat
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Enterprise Linux
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*-
Affected
Redhat
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Rhel E4s
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*-
Affected
Redhat
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Rhel Eus
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*-
Affected
Alma
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Linux
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*-
Affected
Debian
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Debian Linux
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*-
Affected
Fedoraproject
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Fedora
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*-
Affected
Opensuse
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Leap
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*-
Affected
Oracle
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Linux
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*-
Affected
Redhat
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Enterprise Linux
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*-
Affected
Redhat
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Rhel E4s
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*-
Affected
Redhat
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Rhel Eus
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*-
Affected
Slackware
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Slackware Linux
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Affected
Suse
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Sle-module-desktop-applications
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Affected
Suse
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Sle Hpc-espos
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Affected
Suse
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Sle Hpc-ltss
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Affected
Suse
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Sle Hpc
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Affected
Suse
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Sled
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Affected
Suse
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Sles-ltss-extended-security
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Affected
Suse
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Sles-ltss
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Affected
Suse
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Sles
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Affected
Suse
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Sles Sap
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*-
Affected