CVE-2025-62526: OpenWrt Project is a Linux operating system targeting embedded devices. Prior to version 24.10.4, ubusd contains a…
CVE-2025-62526 · Severity: high · CVSS 7.9 · Published 2025-10-22
OpenWrt Project is a Linux operating system targeting embedded devices. Prior to version 24.10.4, ubusd contains a heap buffer overflow in the event registration parsing code. This allows an attacker to modify the head and potentially execute arbitrary code in the context of the ubus daemon. The affected code is executed before running the ACL checks, all ubus clients are able to send such messages. In addition to the heap corruption, the crafted subscription also results in a bypass of the listen ACL. This is fixed in OpenWrt 24.10.4. There are no workarounds.
No. Junglewise Threat Intelligence has no report of CVE-2025-62526 being exploited in the wild.
How severe is CVE-2025-62526?
High severity, with a CVSS score of 7.9, published 22 October 2025.
Which products and versions are affected?
OpenWrt. The advisory does not name versions.
Is there a fix for CVE-2025-62526?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-62526?
Check whether you run OpenWrt. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.