VDB
DEBIAN-CVE-2021-43539
DEBIAN-CVE-2021-43539
PUBLISHED
CVSS 8.800000190734863 HIGH
Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Risk Scores
CVSS 3.1
8.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:11 | thunderbird | 1:86.0~b3-1, 78.14.0-1, 78.14.0-1 |
| Debian:14 | thunderbird | 0, 0, 0 |
| Debian:13 | firefox-esr | 0, 0, 0 |
| Debian:12 | firefox-esr | 0, 0, 0 |
| Debian:11 | firefox-esr | 91.4.0esr-1, 91.4.1esr-1~deb9u1, * |
| Debian:14 | firefox-esr | 0, 0, 0 |
| Debian:13 | thunderbird | 0, 0, 0 |
| Debian:12 | thunderbird | 0, 0, 0 |
Exploit Intelligence
- cve_test.go (github-poc)
- cve_test.go (github-poc)
Timeline
- Dec 8, 2021 CVE Published
- Apr 28, 2026 CVE Updated