Vulnerability in Mozilla Firefox
CVE-2021-29975
Through a series of DOM manipulations, a message, over which the attacker had control of the text but not HTML or formatting, could be overlaid on top of another domain (with the new domain correctly shown in the address bar) resulting in possible user confusion. This vulnerability affects Firefox < 90.
EPSS: 0.010 (58.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Mozilla Firefox — versions unspecified
References
- security@mozilla.org (x_refsource_MISC, Vendor Advisory)
- security@mozilla.org (Exploit, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security@mozilla.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2021-29975?
- CVE-2021-29975 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 6.5/10. Published 2021-08-05.
- How severe is CVE-2021-29975?
- Medium severity. CVSS v3 base score is 6.5 out of 10.