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nvd[email protected]NVD:CVE-2021-4129
HistoryDec 22, 2022 - 8:15 p.m.

CVE-2021-4129

2022-12-2220:15:12
CWE-787
web.nvd.nist.gov
mozilla firefox
memory safety
memory corruption
arbitrary code
cve-2021-4129
thunderbird
vulnerability
exploited
community members

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

49.5%

Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 95, Firefox ESR < 91.4.0, and Thunderbird < 91.4.0.

Affected configurations

NVD
Node
mozillafirefoxRange<95.0
OR
mozillafirefox_esrRange<91.4.0
OR
mozillathunderbirdRange<91.4.0

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

49.5%