Quick answers
- Is CVE-2026-18186 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18186 being exploited in the wild.
- How severe is CVE-2026-18186?
- Informational severity, with a CVSS score of 7.1, published 30 July 2026.
- Which products and versions are affected?
- ASUSTOR ADM 4.1.0 through 4.3.3.RUN1, 5.0.0 through 5.1.3.RI81.
- Is there a fix for CVE-2026-18186?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-18186 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-18186?
- Check whether you run ASUSTOR ADM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A stored format string vulnerability (CWE-134) exists in the FTP Backup component of ASUSTOR ADM. The issue stems from the application writing user-controlled backup configuration data into a task log, which is subsequently processed by an unsafe format string operation in a CGI process. An authenticated attacker with network access can exploit this by providing specially crafted configuration strings. Successful exploitation can lead to the disclosure of sensitive memory information or a denial of service (DoS) by crashing the affected CGI process. The vulnerability affects ADM versions 4.1.0 through 4.3.3.RUN1 and 5.0.0 through 5.1.3.RI81.
Affected products
- ASUSTOR ADM 4.1.0 through 4.3.3.RUN1, 5.0.0 through 5.1.3.RI81
Timeline
- 2026-07-30: advisory