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CVE-2025-62526 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:7.9 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

References to Advisories, Solutions, and Tools

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

see all 7 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-122	Heap-based Buffer Overflow	[email protected]

Affected Products

Product	Versions
openwrt openwrt	< 24.10.4
CPE cpe:2.3:o:openwrt:openwrt:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Oct 30, 2025	Initial Analysis	[email protected]
Oct 22, 2025	New CVE Received	[email protected]