CVE-2025-62491: quickjs before 2025-09-13 (exclusive); +1 more affected products

CVE-2025-62491. CVSS 3.1 base score 8.8 (HIGH, NVD). EPSS 0.00407 (percentile 0.33555), 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: js_std_promise_rejection_check

Attack conditions (Vendor/CNA, CVSS 4.0): Adjacent network · No privileges required · Passive user interaction

What an attacker can do

A attacker can trigger a Use-After-Free error. Vendor/CNA’s CVSS 4.0 assessment (base score 8.8/10) rates confidentiality and integrity impact as high; availability impact as low. The description does not state a further attacker outcome.

Published 19-Oct-2026 17:58 UTC

CWE: CWE-416
CCR priority: 35.3 /100 (P4)
CVSS 3.1: 8.8 /10 · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · NVD
EPSS: 0.00407 · percentile 0.33555 · 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-2025-62491.html