CVE-2020-26952

critical

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

9.5

Description

Incorrect bookkeeping of functions inlined during JIT compilation could have led to memory corruption and a potentially exploitable crash when handling out-of-memory errors. This vulnerability affects Firefox < 83.

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-2020-26952

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202011-12

OS impact

OS	Version	Status	Fixed in
arch		fixed	`83.0-1`
debian	sid	fixed	`83.0-1`

References

https://security.archlinux.org/ASA-202011-12
https://security-tracker.debian.org/tracker/CVE-2020-26952

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