CVE-2026-19771
HIGHCVE-2026-19771 is a high-severity (CVSS 7.2) CWE-77 vulnerability. O3 Security confirms whether CVE-2026-19771 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
A vulnerability was identified in Baicells EG3661M BaiCE_BQ6_2.0.5.3_NA. This impacts an unknown function of the file /cgi-bin/luci of the component LuCI Web Interface. Such manipulation…
Description
A vulnerability was identified in Baicells EG3661M BaiCE_BQ6_2.0.5.3_NA. This impacts an unknown function of the file /cgi-bin/luci of the component LuCI Web Interface. Such manipulation of the argument MaxHops/Timeout/Size leads to os command injection. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Detection & mitigation playbook
VulnerabilityDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for the affected component. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Remediation status
No patched version of the affected component has shipped for CVE-2026-19771 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2026-19771 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2026-19771. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-19771 in your dependencies?
O3 detects CVE-2026-19771 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.