CVE-2020-15681

critical
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
9.5

Description

When multiple WASM threads had a reference to a module, and were looking up exported functions, one WASM thread could have overwritten another's entry in a shared stub table, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 82.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-15681

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202011-1

OS impact

OSVersionStatusFixed in
arch archfixed82.0-1
debian debiansidfixed82.0-1

References

Verify integrity in audit chain (admin only). AS-IS.