Vulnerability Details : CVE-2021-38498

During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.
Vulnerability category: Memory Corruption
Published 2021-11-03 01:15:07
Updated 2021-11-04 20:29:32
Source Mozilla Corporation
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-38498

Probability of exploitation activity in the next 30 days: 0.16%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 52 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-38498

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
5.0
 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
 nvd@nist.gov
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 nvd@nist.gov

CWE ids for CVE-2021-38498

  • Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-38498

Products affected by CVE-2021-38498

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