CVE-2025-62526
HIGHDescription
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.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 15% of all known CVEs.
References
- https://github.com/openwrt/openwrt/commit/4b907e69ea58fc0ba35fd1755dc4ba22262af3a4
- https://github.com/openwrt/openwrt/commit/a7901969932a175cded3c93bdeb65f32ed3705e6
- https://github.com/openwrt/openwrt/security/advisories/GHSA-cp32-65v4-cp73
- https://github.com/openwrt/ubus/commit/60e04048a0e2f3e33651c19e62861b41be4c290f
- https://github.com/openwrt/ubus/commit/aa4a7ee1d3417bc11207ad0a78d579ece7fe0c13
- https://github.com/openwrt/ubus/commit/d31effb4277bd557f5ccf16d909422718c1e49d0
- https://openwrt.org/advisory/2025-10-22-1
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-30.