Quick answers
- Is CVE-2026-17518 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-17518 being exploited in the wild.
- How severe is CVE-2026-17518?
- Informational severity, published 20 October 2026.
- Which products and versions are affected?
- ASUS Router Firmware <UNKNOWN>.
- Is there a fix for CVE-2026-17518?
- 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-2026-17518 attacked?
- It is attacked from the adjacent network or over the network, in device firmware.
- Am I affected by CVE-2026-17518?
- Check whether you run ASUS Router Firmware 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
The vulnerability is a classic buffer copy without bounds checking (CWE-119) in the HTTP request handler of ASUS router firmware. An authenticated adjacent network attacker can send HTTP requests with input exceeding the expected buffer length, corrupting device memory and causing denial of service. The advisory does not indicate a publicly available patch at this time.
Affected products
- ASUS Router firmware <UNKNOWN>
Timeline
- 2026-10-20: disclosed