CVE-2025-62493: quickjs before 2025-09-13 (exclusive); +1 more affected products

CVE-2025-62493. CVSS 3.1 base score 6.5 (MEDIUM, NVD). EPSS 0.00382 (percentile 0.30682), scored 19-Oct-2026.

Affected technology

quickjs · before 2025-09-13 (exclusive)
quickjs project

QuickJS · 2025-04-26 to before 2025-09-13
QuickJS

Component: Not specified by the source
Function: determines

Attack conditions (Vendor/CNA, CVSS 4.0): Adjacent network · Low privileges required · Passive user interaction

What an attacker can do

An attacker can cause the engine to read and process data from the memory immediately following the BigInt buffer. Vendor/CNA’s CVSS 4.0 assessment (base score 5.9/10) rates confidentiality impact as high; integrity and availability impact as low.

Published 19-Oct-2026 17:58 UTC

CWE: CWE-125
CCR priority: 26.1 /100 (P4)
CVSS 3.1: 6.5 /10 · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · NVD
EPSS: 0.00382 · percentile 0.30682 · 2026-10-19
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-19 17:57:47.606446+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-62493.html