How severe is CVE-2025-62525?

CVE-2025-62525 has a CVSS 3.x base score of 7.9, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2025-62525 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-62525?

CVE-2025-62525 affects Openwrt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-62525?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-62525 have an EU (EUVD) identifier?

Yes. CVE-2025-62525 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35592.

When was CVE-2025-62525 published?

CVE-2025-62525 was published on 2025-10-22 and last updated on 2026-06-17.

CVE-2025-62525

CVE-2025-62525 is a high-severity vulnerability in Openwrt with a CVSS 3.x base score of 7.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.9)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35592
Weakness: CWE-20
Affected product: Openwrt
Published: 2025-10-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-62525?: 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.
How severe is CVE-2025-62525?: CVE-2025-62525 has a CVSS 3.x base score of 7.9, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
Is CVE-2025-62525 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-62525?: CVE-2025-62525 affects Openwrt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-62525?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-62525 have an EU (EUVD) identifier?: Yes. CVE-2025-62525 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35592.
When was CVE-2025-62525 published?: CVE-2025-62525 was published on 2025-10-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:openwrt:openwrt:*:*:*:*:*:*:*:*

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