Stack-Based Buffer Overflow in Netcore NR255-V by Netcore
CVE-2026-76860

8.7HIGH

Key Information:

Vendor

Netcore

Status
Nr255-v
Vendor
CVE Published:
15 September 2026

What is CVE-2026-76860?

The Netcore NR255-V version 1.5.130703 is susceptible to a stack-based buffer overflow due to unbounded tokenization of MAC and ID inputs in the wake_up_set.cgi endpoint. This vulnerability allows attackers to exploit crafted MAC and ID values, leading to stack buffer overflow and potential corruption of the program memory. Organizations using this product are advised to patch and secure their systems against such exploit vectors.

Affected Version(s)

NR255-V 1.5.130703

References

https://github.com/draw-ctf/netcore-router-public-refs/bl...
third-party-advisory
https://www.vulncheck.com/advisories/netcore-nr255-v-1.5....
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Zhou Ao
Yin Luxing
Jiang Yuxuan
Liu Xin
@Nebusec
.