Quick answers
- Is CVE-2026-19386 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-19386 being exploited in the wild.
- How severe is CVE-2026-19386?
- Informational severity, published 7 October 2026.
- Which products and versions are affected?
- ASUS Router Modules <UNKNOWN>.
- Is there a fix for CVE-2026-19386?
- 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-2026-19386 attacked?
- It is attacked from the adjacent network or with local access, in device firmware.
- Am I affected by CVE-2026-19386?
- Check whether you run ASUS Router Modules 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 stack-based buffer overflow exists in ASUS router firmware modules when processing configuration file uploads. The vulnerability is triggered when a user-supplied configuration file exceeds the expected buffer size during upload. An authenticated attacker on the local network can craft a malicious configuration file to overflow the stack and execute arbitrary code with router privileges.
Affected products
- ASUS router modules <UNKNOWN>
Timeline
- 2026-10-07: disclosed