What is CVE-2026-10701?

CVE-2026-10701 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2026-06-02.

How severe is CVE-2026-10701?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Mozilla Firefox

CVE-2026-10701

Incorrect boundary conditions in the Graphics: Text component. This vulnerability was fixed in Firefox 151.0.3.

Vulnerability class: Buffer Overflow

EPSS: 0.000 (9.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Mozilla Firefox — versions 151.0.3

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

security@mozilla.org (Permissions Required)
security@mozilla.org (Vendor Advisory)

Frequently asked questions

What is CVE-2026-10701?: CVE-2026-10701 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2026-06-02.
How severe is CVE-2026-10701?: High severity. CVSS v3 base score is 7.5 out of 10.