CVE-2026-76865: NULL Pointer Dereference in Netcore NR255-V
Netcore NR255-V version 1.5.130703 contains a null pointer dereference vulnerability in specific QoS setter CGI handlers. This flaw arises from unchecked results of the atoi() function, allowing an attacker to cause a denial of service by supplying crafted input. The vulnerability has a medium severity rating with a CVSS score of 6.9.
AI Analysis
Technical Summary
CVE-2026-76865 is a null pointer dereference vulnerability in Netcore NR255-V version 1.5.130703. The issue exists in the QoS setter CGI handlers filter_conn_del_cgi.c and gre_prio_set_cgi.c, where the results of atoi() are not properly checked. An attacker can exploit this by sending specially crafted input to these handlers, leading to a denial of service condition.
Potential Impact
Successful exploitation results in denial of service by crashing or destabilizing the affected device. There is no indication of privilege escalation, data disclosure, or remote code execution. The vulnerability requires high privileges to exploit (PR:H) and does not require user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict access to the vulnerable CGI handlers and monitor for unusual activity targeting these endpoints.
CVE-2026-76865: NULL Pointer Dereference in Netcore NR255-V
Description
Netcore NR255-V version 1.5.130703 contains a null pointer dereference vulnerability in specific QoS setter CGI handlers. This flaw arises from unchecked results of the atoi() function, allowing an attacker to cause a denial of service by supplying crafted input. The vulnerability has a medium severity rating with a CVSS score of 6.9.
CVSS v4.0
Score 6.9medium
Affected software
Netcore
NR255-V
pkg:github/draw-ctf/netcore-router-public-refsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-76865 is a null pointer dereference vulnerability in Netcore NR255-V version 1.5.130703. The issue exists in the QoS setter CGI handlers filter_conn_del_cgi.c and gre_prio_set_cgi.c, where the results of atoi() are not properly checked. An attacker can exploit this by sending specially crafted input to these handlers, leading to a denial of service condition.
Potential Impact
Successful exploitation results in denial of service by crashing or destabilizing the affected device. There is no indication of privilege escalation, data disclosure, or remote code execution. The vulnerability requires high privileges to exploit (PR:H) and does not require user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict access to the vulnerable CGI handlers and monitor for unusual activity targeting these endpoints.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-19T21:47:08.936Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa9c06e55bf5e2cf56f8246
Added to database: 09/15/2026, 22:02:22 UTC
Last enriched: 09/15/2026, 22:25:14 UTC
Last updated: 09/16/2026, 03:06:24 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.