Mozilla Firefox up to 153 Remote Settings Client sandbox

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 153. It has been declared as critical. This impacts an unknown function of the component Remote Settings Client. Executing a manipulation can lead to sandbox. This vulnerability is tracked as CVE-2026-75874. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 153. It has been declared as critical. This vulnerability affects some unknown processing of the component Remote Settings Client. The manipulation with an unknown input leads to a sandbox vulnerability. The CWE definition for the vulnerability is CWE-265. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154.

The advisory is available at bugzilla.mozilla.org. This vulnerability was named CVE-2026-75874 since 08/18/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/18/2026). This vulnerability is assigned to T1611 by the MITRE ATT&CK project.

Upgrading to version 154 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: Sandbox
CWE: CWE-265 / CWE-264
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: Firefox 154

Timelineinfo

08/18/2026 Advisory disclosed
08/18/2026 +0 days CVE reserved
08/18/2026 +0 days VulDB entry created
08/18/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2026-75874 (🔒)
GCVE (CVE): GCVE-0-2026-75874
GCVE (VulDB): GCVE-100-391642

Entryinfo

Created: 08/18/2026 15:35
Changes: 08/18/2026 15:35 (57)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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