What is CVE-2021-29963?

CVE-2021-29963 is a medium-severity vulnerability in Mozilla Firefox, classified under Insufficient Verification of Data Authenticity. CVSS score: 4.3/10. Published 2021-06-24.

How severe is CVE-2021-29963?

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

Vulnerability in Mozilla Firefox

CVE-2021-29963

Address bar search suggestions in private browsing mode were re-using session data from normal mode. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 89.

EPSS: 0.003 (25.6th 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:L/A:N.

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

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-2021-29963?: CVE-2021-29963 is a medium-severity vulnerability in Mozilla Firefox, classified under Insufficient Verification of Data Authenticity. CVSS score: 4.3/10. Published 2021-06-24.
How severe is CVE-2021-29963?: Medium severity. CVSS v3 base score is 4.3 out of 10.