What is CVE-2021-29962?

CVE-2021-29962 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2021-06-24.

How severe is CVE-2021-29962?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Mozilla Firefox

CVE-2021-29962

Firefox for Android would become unstable and hard-to-recover when a website opened too many popups. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 89.

EPSS: 0.007 (51.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-404 — Improper Resource Shutdown or Release

References

security@mozilla.org (x_refsource_MISC, Release Notes, Vendor Advisory)
security@mozilla.org (Permissions Required, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-29962?: CVE-2021-29962 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2021-06-24.
How severe is CVE-2021-29962?: Medium severity. CVSS v3 base score is 4.3 out of 10.