High severity7.5NVD Advisory· Published Jun 24, 2021· Updated Jun 17, 2026
CVE-2021-29952
CVE-2021-29952
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8<88.0.1+ 3 more
- (no CPE)range: <88.0.1
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:-:*:*range: <88.0.1
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:*range: <88.1.3
<88.1.3+ 1 more
- (no CPE)range: <88.1.3
- (no CPE)range: unspecified
- osv-coords2 versionspkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed
< 92.0-1.2+ 1 more
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 128.5.1-1.1
Patches
Vulnerability mechanics
References
2- bugzilla.mozilla.org/show_bug.cginvdPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-20/nvdRelease NotesVendor Advisory
News mentions
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