Vulnerability Description
When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort may have been exploitable to run arbitrary code. This vulnerability affects Firefox < 88.0.1 and Firefox for Android < 88.1.3.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 88.0.1 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1704227Permissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-20/Release NotesVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1704227Permissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-20/Release NotesVendor Advisory
FAQ
What is CVE-2021-29952?
CVE-2021-29952 is a vulnerability with a CVSS score of 7.5 (HIGH). When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort may have been exploitable to run arbitrary code. This vulnerab...
How severe is CVE-2021-29952?
CVE-2021-29952 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-29952?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.