Vulnerability in Mozilla Firefox
CVE-2020-12409
When using certain blank characters in a URL, they where incorrectly rendered as spaces instead of an encoded URL. This vulnerability affects Firefox < 77.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (66.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.012 · change: +0.002
Affected products
- Mozilla Firefox — versions unspecified
References
- www.mozilla.org/security/advisories/mfsa2020-20/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-12409?
- CVE-2020-12409 is a high-severity vulnerability in Mozilla Firefox. CVSS score: 8.8/10. Published 2020-07-09.
- How severe is CVE-2020-12409?
- High severity. CVSS v3 base score is 8.8 out of 10.