Argument injection in Netcore NR268 DDNS configuration
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-88.
Summary
Netcore NR268 versions from 1.7.121109 onward are affected. Manipulating the Hostname argument handled by the execvp call in the DDNS component's /router/DDNSset.cgi file allows argument injection (CWE-88). A remote attacker with low privileges and no user interaction can exploit this to fully compromise confidentiality, integrity and availability.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
A flaw has been found in Netcore NR268 1.7.121109. The affected element is the function execvp of the file /router/DDNSset.cgi of the component DDNS. Executing a manipulation of the argument Hostname can lead to argument injection. The attack can be launched remotely.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Netcore NR268.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-12 Threatist record created from CVE-2026-108929
- 2026-10-13 Alias added: GHSA-q83v-h5qh-mxfc
- 2026-10-16 CISA SSVC decision points changed
References
More Netcore vulnerabilities
- TI-2026-71052 Improper authentication in Netcore NR268 CGI Execution CVSS 4.0CRITICAL 10.0
- TI-2026-65286 Netcore NAP930 Network Tools CGI network_tools eval os command injection CVSS 4.0CRITICAL 10.0
- TI-2026-65110 Netcore NR289-GE boa_temp process_request missing authentication CVSS 4.0CRITICAL 10.0
- TI-2026-65109 Netcore NR289-GE CGI set_ntp_server_ip.cgi system os command injection CVSS 4.0CRITICAL 10.0
- TI-2026-65108 Netcore NR289-GE Location Time location_time.cgi system os command injection CVSS 4.0CRITICAL 10.0
- TI-2026-65105 Netcore NR289-GE CGI ap_ip.cgi system os command injection CVSS 4.0CRITICAL 10.0
Sources
- CVE-2026-108929 · CVE Program
- CVE-2026-108929 · NVD
- FIRST EPSS
- GHSA-q83v-h5qh-mxfc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences