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CVE-2025-62526

7.9 · HIGH

OpenWrt Project is a Linux operating system targeting embedded devices.

Published Oct 22, 2025CWE-122EPSS 0.26%

Overview

CVE-2025-62526 is a high-severity vulnerability. It was published on October 22, 2025 and has a CVSS 3.1 base score of 7.9 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.9, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/openwrt/openwrt/commit/4b907e69ea58fc0ba35fd1755dc4ba22262af3a4GitHubgithub.com/openwrt/openwrt/commit/a7901969932a175cded3c93bdeb65f32ed3705e6GitHubgithub.com/openwrt/openwrt/security/advisories/GHSA-cp32-65v4-cp73GitHubgithub.com/openwrt/ubus/commit/60e04048a0e2f3e33651c19e62861b41be4c290fGitHubgithub.com/openwrt/ubus/commit/aa4a7ee1d3417bc11207ad0a78d579ece7fe0c13GitHubgithub.com/openwrt/ubus/commit/d31effb4277bd557f5ccf16d909422718c1e49d0Refopenwrt.org/advisory/2025-10-22-1

How CyberStrike helps

Frequently asked questions

What is CVE-2025-62526?

CVE-2025-62526 is a high-severity vulnerability. It was published on October 22, 2025 and has a CVSS 3.1 base score of 7.9 (HIGH).

How severe is CVE-2025-62526?

This vulnerability has a CVSS 3.1 base score of 7.9, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-62526?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-62526?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-62526 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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