CVE-2025-62494 is a type confusion vulnerability in the QuickJS engine's string addition operation, affecting quickjs_project quickjs. An attacker can manipulate the type of a string operand during a callback, leading to memory corruption and potential arbitrary code execution. With a CVSS score of 8.8 (HIGH), this vulnerability is remotely exploitable with low attack complexity and no user interaction required, posing a significant risk to confidentiality, integrity, and availability. Currently, there is no public exploit code, Metasploit module, or Nuclei template available, and it has not been added to CISA's KEV catalog. Community discussion and media coverage are minimal, indicating low public awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2025-09-13CPE matchmatch criteria | cpe:2.3:a:quickjs_project:quickjs:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.