Quick answers
- Is CVE-2026-76860 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-76860 being exploited in the wild.
- How severe is CVE-2026-76860?
- High severity, with a CVSS score of 8.8, published 15 September 2026.
- Which products and versions are affected?
- Netcore NR255-V 1.5.130703.
- Is there a fix for CVE-2026-76860?
- 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-2026-76860 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-76860?
- Check whether you run Netcore NR255-V 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 stack-based buffer overflow (CWE-121) in the wake_up_set.cgi endpoint caused by unbounded tokenization of MAC address and ID parameters. An authenticated attacker can supply crafted MAC and ID values that overflow an internal buffer and corrupt program memory, potentially leading to code execution or denial of service. The attack requires network access to the router and valid credentials; no user interaction is needed once authenticated. A patch is not yet publicly documented at the advisory publication date.
Affected products
- Netcore NR255-V 1.5.130703
Timeline
- 2026-09-15: disclosed
- 2026-08-19: other: Public technical reference published