Vulnerability Details : 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.
Exploit prediction scoring system (EPSS) score for CVE-2021-29975
Probability of exploitation activity in the next 30 days: 0.14%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 49 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-29975
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
NIST |
References for CVE-2021-29975
-
https://www.mozilla.org/security/advisories/mfsa2021-28/
Security Vulnerabilities fixed in Firefox 90 — MozillaVendor Advisory
-
https://security.gentoo.org/glsa/202202-03
Mozilla Firefox: Multiple vulnerabilities (GLSA 202202-03) — Gentoo securityThird Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1713259
Access DeniedExploit;Issue Tracking;Vendor Advisory
Products affected by CVE-2021-29975
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*