Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openwrt | Openwrt | < 24.10.4 |
Related Weaknesses (CWE)
References
- https://github.com/openwrt/openwrt/commit/4b907e69ea58fc0ba35fd1755dc4ba22262af3Patch
- https://github.com/openwrt/openwrt/commit/a7901969932a175cded3c93bdeb65f32ed3705Patch
- https://github.com/openwrt/openwrt/security/advisories/GHSA-cp32-65v4-cp73PatchVendor Advisory
- https://github.com/openwrt/ubus/commit/60e04048a0e2f3e33651c19e62861b41be4c290fPatch
- https://github.com/openwrt/ubus/commit/aa4a7ee1d3417bc11207ad0a78d579ece7fe0c13Patch
- https://github.com/openwrt/ubus/commit/d31effb4277bd557f5ccf16d909422718c1e49d0Patch
- https://openwrt.org/advisory/2025-10-22-1Third Party Advisory
FAQ
What is CVE-2025-62526?
CVE-2025-62526 is a vulnerability with a CVSS score of 7.9 (HIGH). 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 ...
How severe is CVE-2025-62526?
CVE-2025-62526 has been rated HIGH with a CVSS base score of 7.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-62526?
Check the references section above for vendor advisories and patch information. Affected products include: Openwrt Openwrt.