Mozilla Focus up to 141 on iOS Javascript Link clickjacking

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Mozilla Focus up to 141 on iOS. Affected by this vulnerability is an unknown functionality of the component Javascript Link Handler. This manipulation causes clickjacking. This vulnerability appears as CVE-2025-55033. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Mozilla Focus up to 141 on iOS and classified as problematic. Affected by this vulnerability is some unknown processing of the component Javascript Link Handler. The manipulation with an unknown input leads to a clickjacking vulnerability. The CWE definition for the vulnerability is CWE-451. The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks. As an impact it is known to affect integrity. The summary by CVE is:

Dragging JavaScript links to the URL bar in Focus for iOS could be utilized to run malicious scripts, potentially resulting in XSS attacks This vulnerability affects Focus for iOS < 142.

It is possible to read the advisory at bugzilla.mozilla.org. This vulnerability is known as CVE-2025-55033 since 08/05/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/12/2025). The attack technique deployed by this issue is T1566.003 according to MITRE ATT&CK.

Upgrading to version 142 eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2025-25222) and CERT Bund (WID-SEC-2025-1866). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • IGEL OS
  • SUSE openSUSE
  • RESF Rocky Linux
  • Mozilla Firefox
  • Mozilla Firefox ESR
  • Mozilla Thunderbird

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Clickjacking
CWE: CWE-451
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Focus 142

Timelineinfo

08/05/2025 CVE reserved
08/19/2025 +14 days Advisory disclosed
08/19/2025 +0 days VulDB entry created
10/12/2025 +54 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2025-55033 (🔒)
GCVE (CVE): GCVE-0-2025-55033
GCVE (VulDB): GCVE-100-320683
EUVD: 🔒
CERT Bund: WID-SEC-2025-1866 - Mozilla Firefox und Thunderbird: Mehrere Schwachstellen

Entryinfo

Created: 08/19/2025 23:39
Updated: 10/12/2025 05:34
Changes: 08/19/2025 23:39 (57), 08/20/2025 01:56 (1), 08/20/2025 10:37 (1), 08/27/2025 21:12 (7), 09/07/2025 04:36 (1), 10/12/2025 05:34 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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