# CVE-2026-76869

## Summary

- **CVE ID:** CVE-2026-76869
- **Severity:** HIGH
- **CVSS Score:** 8.6 (CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-121
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 17, 2026

## Description

Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in reboot_timer_set.cgi caused by improper sscanf token parsing. Attackers can exploit this flaw by submitting crafted input to the affected endpoint to corrupt stack memory.

## Affected Products

- Netcore — NR255-V (1.5.130703)

## References

- [CNA](https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-reboot-timer-overflow.md)
- [CNA](https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-stack-based-buffer-overflow-in-reboot-timer-set-cgi)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.8

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._