What is CVE-2021-29993?

CVE-2021-29993 is a high-severity vulnerability in Mozilla Firefox. CVSS score: 8.1/10. Published 2021-11-03.

How severe is CVE-2021-29993?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Mozilla Firefox

CVE-2021-29993

Firefox for Android allowed navigations through the `intent://` protocol, which could be used to cause crashes and UI spoofs. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92.

EPSS: 0.007 (49.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.

Affected products

Mozilla Firefox — versions unspecified

References

security@mozilla.org (x_refsource_MISC, Vendor Advisory)
security@mozilla.org (x_refsource_MISC, Broken Link)

Frequently asked questions

What is CVE-2021-29993?: CVE-2021-29993 is a high-severity vulnerability in Mozilla Firefox. CVSS score: 8.1/10. Published 2021-11-03.
How severe is CVE-2021-29993?: High severity. CVSS v3 base score is 8.1 out of 10.