Vulnerability Details : CVE-2021-29952
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.
Products affected by CVE-2021-29952
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:-:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-29952
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-29952
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.1
|
MEDIUM | AV:N/AC:H/Au:N/C:P/I:P/A:P |
4.9
|
6.4
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
NIST |
CWE ids for CVE-2021-29952
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-29952
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1704227
Access DeniedPermissions Required;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-20/
Security Vulnerabilities fixed in Firefox 88.0.1, Firefox for Android 88.1.3 — MozillaRelease Notes;Vendor Advisory
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