CVE-2021-4128 - Vulnerability Details - OpenCVE

When transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentially exploitable crash.<br>*This bug only affects Firefox on MacOS. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00288.

Exploitation poc

Automatable no

Technical Impact partial

Vendors	Products
Apple	Macos
Mozilla	Firefox

Configuration 1 [-]

AND

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2021-34002	When transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentially exploitable crash.<br>This bug only affects Firefox on MacOS. Other operating systems are unaffected.. This vulnerability affects Firefox < 95.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=1735852
https://www.mozilla.org/security/advisories/mfsa2021-52/

History

Wed, 16 Apr 2025 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2022-12-22T00:00:00.000Z

Updated: 2025-04-16T15:58:19.476Z

Reserved: 2021-12-16T00:00:00.000Z

Link: CVE-2021-4128

Vulnrichment

Updated: 2024-08-03T17:16:04.265Z

NVD

Status : Modified

Published: 2022-12-22T20:15:11.937

Modified: 2025-04-16T16:15:18.770

Link: CVE-2021-4128

Redhat

No data.

OpenCVE Enrichment

No data.

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