CVE-2021-43535
A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.
- Affected products
- Alt Linux, Astra Linux, Centos, Firefox, Firefox Esr, Linuxmint, Red Hat, Rocky Linux
- Mozilla Firefox
- < 93.0
- Mozilla Firefox Esr
- < 91.3.0
- Mozilla Thunderbird
- < 91.3.0
- Fix
- Available
- CVSS 3.1
- 8.8 HIGH
- EPSS
- 1.1% (63th percentile)
- Weakness
- CWE-416
- NVD status
- Modified
- Published
- 2021-12-08
CVE-2021-43535 at NVD
No indexed exploits for CVE-2021-43535 yet
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No exploit for CVE-2021-43535 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.