CVE-2025-59374: ASUS Live Update Embedded Malicious Code Vulnerability
ASUS · Live Update · NVD published 2025-12-17 · posted 2025-12-17 · last modified 2026-09-26
What it is
"UNSUPPORTED WHEN ASSIGNED" Certain versions of the ASUS Live Update client were distributed with unauthorized modifications introduced through a supply chain compromise. The modified builds could cause devices meeting specific targeting conditions to perform unintended actions. Only devices that met these conditions and installed the compromised versions were affected. The Live Update client has already reached End-of-Support (EOS) in October 2021, and no currently supported devices or products are affected by this issue.
| Weakness | CWE-506 |
|---|---|
| CVSS vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X (source: 54bf65a7-a193-42d2-b1ba-8e150d3c35e1) |
| CISA due date | 2026-01-07 (for US federal agencies under BOD; a good deadline for everyone) |
| ATT&CK tactics | n/a |
Exploitation evidence
First exploit evidence seen: 2025-12-17 (earliest date across the sources below).
Exploited in the wild
- CISA KEV: listed since 2025-12-17. Source
Sources: CISA KEV.
No ATT&CK techniques could be mapped or inferred for this CVE yet.
How to fix it
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (source: CISA KEV)
Fixed versions
- asus live update: upgrade to 3.6.8 or later
Derived from the NVD CPE configuration (versionEndExcluding / versionEndIncluding). Always confirm with the vendor advisory.
Vendor advisories and patches
- https://www.asus.com/support/faq/1018727/ (CISA KEV notes)
- https://www.asus.com/news/hqfgvuyz6uyayje1/ (Vendor Advisory)
Detection Generic guidance
Response checklist Generic guidance
- Inventory: find every instance of the affected product and version (include internet-facing and forgotten ones).
- Patch or mitigate per the vendor advisory; if you cannot patch, remove internet exposure or apply the vendor workaround.
- Assume compromise if the system was exposed before patching: hunt for the indicators in the advisory and review logs back to the disclosure date.
- Rotate credentials and secrets stored on or used by the affected system if compromise cannot be ruled out.