CVE-2026-76861
Last modified
CVE-2026-76861 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Netcore | NR255-V | 1.5.130703 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-76861?
How severe is CVE-2026-76861?
How do I fix CVE-2026-76861?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-76856Netcore NR255-V firmware version 1.5.130703 contains a cross…8.1
- CVE-2026-76857Netcore NR255-V firmware version 1.5.130703 contains a sensi…6.5
- CVE-2026-76858Netcore NR255-V version 1.5.130703 contains a stored cross-s…4.8
- CVE-2026-76859Netcore NR255-V version 1.5.130703 contains a sensitive info…6.5
- CVE-2026-7686A vulnerability was found in eyeo Adblock Plus up to 4.36.2 …5.5
- CVE-2026-76860Netcore NR255-V version 1.5.130703 contains a stack-based bu…8.8
- CVE-2026-76862Netcore NR255-V version 1.5.130703 contains an os command ar…8.8
- CVE-2026-76863Netcore NR255-V version 1.5.130703 contains a sensitive info…4.3
- CVE-2026-76864NR255-V version 1.5.130703 fails to sanitize QoS rule names …4.8
- CVE-2026-76865Netcore NR255-V version 1.5.130703 contains a null pointer d…4.9
- CVE-2026-76866Netcore NR255-V firmware version 1.5.130703 builds root-run …7.2
- CVE-2026-76867Netcore NR255-V firmware version 1.5.130703 contains a store…5.4
Are you affected by CVE-2026-76861?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
