CVE-2025-62525— OpenWrt vulnerable to local privilage escalation
Quick assessment
Affected
openwrt openwrt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
OpenWrt是OpenWrt开源的一套针对嵌入式设备的Linux操作系统。 OpenWrt 24.10.4之前版本存在缓冲区错误漏洞，该漏洞源于ltq-ptm驱动程序的ioctls允许本地用户读写任意内核内存，可能导致沙箱逃逸。
Possible ATT&CK Techniques 3 AI
T1611 · Escape to Host T1055 · Process Injection T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2025-62525
Vulnerability Information
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Vulnerability Title
OpenWrt vulnerable to local privilage escalation
Source: CVE Program / CVE List V5
Vulnerability Description
OpenWrt Project is a Linux operating system targeting embedded devices. Prior to version 24.10.4, local users could read and write arbitrary kernel memory using the ioctls of the ltq-ptm driver which is used to drive the datapath of the DSL line. This only effects the lantiq target supporting xrx200, danube and amazon SoCs from Lantiq/Intel/MaxLinear with the DSL in PTM mode. The DSL driver for the VRX518 is not affected. ATM mode is also not affected. Most VDSL lines use PTM mode and most ADSL lines use ATM mode. OpenWrt is normally running as a single user system, but some services are sandboxed. This vulnerability could allow attackers to escape a ujail sandbox or other contains. This is fixed in OpenWrt 24.10.4. There are no workarounds.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenWrt 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenWrt是OpenWrt开源的一套针对嵌入式设备的Linux操作系统。 OpenWrt 24.10.4之前版本存在缓冲区错误漏洞，该漏洞源于ltq-ptm驱动程序的ioctls允许本地用户读写任意内核内存，可能导致沙箱逃逸。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-62525
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2025-62525 (1)
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V. Comments for CVE-2025-62525
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