OS command injection in Netcore B11 wireless router allows code execution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-78.
Summary
Netcore B11 Enterprise-level full Gigabit 9-port shop wireless router v1.3.241114.024540 and before is affected. An OS command injection flaw (CWE-78) in the www\cgi-bin\upgrade file lets a remote attacker execute arbitrary code without authentication. The references contain no exploit link, and CISA's SSVC assessment rates exploitation as proof of concept.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
An issue in Netcore B11 Enterprise-level full Gigabit 9-port shop wireless router v1.3.241114.024540 and before allows a remote attacker to execute arbitrary code via the www\cgi-bin\upgrade file
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Netcore B11 Enterprise-level full Gigabit 9-port shop wireless router.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-09 Threatist record created from CVE-2026-78796
- 2026-10-20 CVSS score added · CISA ADP
- 2026-10-20 Weakness changed · CISA ADP
- 2026-10-20 CISA SSVC decision points changed
- 2026-10-20 Priority changed: LOW → HIGH
- 2026-10-20 Alias added: GHSA-2w3c-qw6p-h26m
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2026-78796 · CVE Program
- CVE-2026-78796 · NVD
- FIRST EPSS
- GHSA-2w3c-qw6p-h26m · GitHub Advisory Database · CC BY 4.0
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