Out-of-bounds read in OpenWrt - CVE-2025-62525
Published: April 24, 2026
Vulnerability identifier: #VU127515
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-62525
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to read and write arbitrary kernel memory.
The vulnerability exists due to improper input validation in the ltq-ptm driver ioctls when processing ioctl requests. A local user can send crafted ioctl requests to read and write arbitrary kernel memory.
The issue affects systems using the ltq-ptm driver for DSL datapath operation in PTM mode on supported lantiq targets.
Affected software
OpenWrt
How to mitigate CVE-2025-62525
Install security update from vendor's website.
OpenWrt - update to 24.10.4