CVE-2021-4128

2022-12-2200:00:00

mozilla

www.cve.org

memory corruption

graphics object

exploitable crash

vulnerability

firefox

macos

cve-2021-4128

7.9 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

34.2%

JSON

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.

CNA Affected

[
  {
    "vendor": "Mozilla",
    "product": "Firefox",
    "versions": [
      {
        "version": "unspecified",
        "lessThan": "95",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]