Buffer overflow in Next.js - #VU145733
Published: August 26, 2026
Vulnerability identifier: #VU145733
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to memory corruption in the libheif library used by the Image Optimization API when processing AVIF files for image optimization. A remote attacker can supply a specially crafted AVIF file to execute arbitrary code.
Affected software
Next.js
Remediation
Install security update from vendor's website.
Next.js - addressed in versions 15.5.24, 16.3.3