Vulnerability in Mozilla Firefox
CVE-2021-23970
Context-specific code was included in a shared jump table; resulting in assertions being triggered in multithreaded wasm code. This vulnerability affects Firefox < 86.
Published · last modified .
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:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.6% 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: 0.010 · change: 0.000
Affected products
- Mozilla Firefox — versions < 86
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2021-07/ (Release Notes, Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking, Vendor Advisory)
- security.gentoo.org/glsa/202104-10 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-23970?
- CVE-2021-23970 is a medium-severity vulnerability in Mozilla Firefox, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2021-02-26.
- How severe is CVE-2021-23970?
- Medium severity. CVSS v3 base score is 6.5 out of 10.