What is CVE-2020-26952?

CVE-2020-26952 is a high-severity vulnerability in Mozilla Firefox, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-12-09.

How severe is CVE-2020-26952?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Mozilla Firefox

CVE-2020-26952

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.

Vulnerability class: Buffer Overflow

EPSS: 0.011 (63.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mozilla Firefox — versions < 83

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security@mozilla.org (Permissions Required, x_refsource_MISC, Issue Tracking, Vendor Advisory)
security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2020-26952?: CVE-2020-26952 is a high-severity vulnerability in Mozilla Firefox, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-12-09.
How severe is CVE-2020-26952?: High severity. CVSS v3 base score is 8.8 out of 10.