cve.bz

CVE-2021-23954

8.8 highEPSS 1.2%

High (8.8) in mozilla. EPSS 1.2% chance of exploitation in the next 30 days.

Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Severity

CVSS 3.1

8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-31)
CWE
CWE-843
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON