Vulnerability · Published Sep 15, 2026 · Assigned by VulnCheck

CVE-2026-76869Netcore NR255-V 1.5.130703 Stack-Based Buffer Overflow in reboot_timer_set.cgi

High 7.2

In plain English

A high-severity stack buffer overflow in NR255-V from Netcore. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)0.6%top 52.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
Netcore	NR255-V	1.5.130703

Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Netcore router public references: Stack-based Buffer Overflow in reboot_timer_set.cgi via sscanf Token Parsing third-party-advisory
VulnCheck Advisory: Netcore NR255-V 1.5.130703 Stack-Based Buffer Overflow in reboot_timer_set.cgi third-party-advisory