CVE-2025-62495 is an integer overflow vulnerability in the QuickJS regular expression engine (libregexp) affecting quickjs_project quickjs. It arises from an inconsistent representation of the bytecode buffer size, where a large unsigned size is incorrectly cast to a signed integer, causing it to wrap around to a negative value. This negative value is then used in offset calculations, leading to an out-of-bounds write. With a CVSS score of 8.8 HIGH, this vulnerability has a network attack vector, low attack complexity, and can result in high impacts to confidentiality, integrity, and availability. There is currently no public exploit code available, it is not listed in CISA's KEV catalog, and there is no significant community discussion or media coverage surrounding it.
| 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.