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CVE-2025-62526

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.

Published

2025-10-22T15:16:07.177

Last Modified

2025-10-30T17:21:42.660

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.9 (HIGH)

Weaknesses

Type: Secondary
CWE-122

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	openwrt	openwrt	< 24.10.4	Yes

References

https://github.com/openwrt/openwrt/commit/4b907e69ea58fc0ba35fd1755dc4ba22262af3a4 Patch ([email protected])
https://github.com/openwrt/openwrt/commit/a7901969932a175cded3c93bdeb65f32ed3705e6 Patch ([email protected])
https://github.com/openwrt/openwrt/security/advisories/GHSA-cp32-65v4-cp73 Patch, Vendor Advisory ([email protected])
https://github.com/openwrt/ubus/commit/60e04048a0e2f3e33651c19e62861b41be4c290f Patch ([email protected])
https://github.com/openwrt/ubus/commit/aa4a7ee1d3417bc11207ad0a78d579ece7fe0c13 Patch ([email protected])
https://github.com/openwrt/ubus/commit/d31effb4277bd557f5ccf16d909422718c1e49d0 Patch ([email protected])
https://openwrt.org/advisory/2025-10-22-1 Third Party Advisory ([email protected])