Buffer overflow in Bellard Quickjs

CVE-2025-12745

A weakness has been identified in QuickJS up to eb2c89087def1829ed99630cb14b549d7a98408c. This affects the function js_array_buffer_slice of the file quickjs.c. This manipulation causes buffer over-read. The attack is restricted to local e…

Vulnerability class: Buffer Overflow

EPSS: 0.002 (7.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

  • Bellard Quickjs
  • N/a Quickjs — versions eb2c89087def1829ed99630cb14b549d7a98408c

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-12745?
CVE-2025-12745 is a medium-severity vulnerability in Bellard Quickjs, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2025-11-05.
How severe is CVE-2025-12745?
Medium severity. CVSS v3 base score is 5.3 out of 10.