CVE-2026-76861
High
Description
Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in ntools_tcpdump_start_set.cgi caused by an unsized sprintf call when processing form values. An attacker can submit crafted input to this cgi endpoint to overflow the stack buffer and potentially execute arbitrary code.
SeverityHigh
CVSS8.8
Exploit probability—
ProductNR255-V
PublishedSep 15, 2026
First seenSep 15, 2026
Weakness typeCWE-121CWE-121
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Netcore NR255-V | 1.5.130703 | — |
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