CVE-2025-62525
highpriority · track · 35EPSS 0.002 · 8 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (14)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-62525cnnvd
- https://github.com/openwrt/openwrt/commit/2a76abc5442e3f74d95b4caa9bb57e5488fc132ecnnvd
- https://github.com/openwrt/openwrt/commit/e001b31163a77683ee741d169f794cfa50926f37cnnvd
- https://github.com/openwrt/openwrt/releasesPatchcnnvd
- https://github.com/openwrt/openwrt/security/advisories/GHSA-h427-frpr-7cqrcnnvd
- https://openwrt.org/advisory/2025-10-22-2cnnvd
- https://github.com/openwrt/openwrt/commit/2a76abc5442e3f74d95b4caa9bb57e5488fc132eenisa_euvd
- https://github.com/openwrt/openwrt/commit/e001b31163a77683ee741d169f794cfa50926f37enisa_euvd
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