CVE-2023-0776: Baicells Nova 436Q, Nova 430E, Nova 430I, and Neutrino 430 LTE TDD eNodeB devices with firmware through QRTB 2
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HIGH 8.1REMOTEUPGRADEUPGRADEUPGRADE
CVE-2023-0776 is a high-severity flaw (CVSS 8.1) affecting neutrino 430 firmware, nova430l firmware, nova430e firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Baicells Nova 436Q, Nova 430E, Nova 430I, and Neutrino 430 LTE TDD eNodeB devices with firmware through QRTB 2.12.7 are vulnerable to remote shell code exploitation via HTTP command injections. Commands are executed using pre-login execution and executed with root permissions. The following methods below have been tested and validated by a 3rd party analyst and has been confirmed exploitable special thanks to Rustam Amin for providing the steps t
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
Published CVE record published
Updated Record last modified
baicells neutrino 430 firmware UPGRADE
Affected: <= qrtb_2.12.7
Fixed in: newer than qrtb_2.12.7
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
baicells nova430l firmware UPGRADE
Affected: <= qrtb_2.12.7
Fixed in: newer than qrtb_2.12.7
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
baicells nova430e firmware UPGRADE
Affected: <= qrtb_2.12.7
Fixed in: newer than qrtb_2.12.7
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
baicells nova436q firmware UPGRADE
Affected: <= qrtb_2.12.7
Fixed in: newer than qrtb_2.12.7
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-0776?
neutrino 430 firmware: upgrade to newer than qrtb_2.12.7; nova430l firmware: upgrade to newer than qrtb_2.12.7; nova430e firmware: upgrade to newer than qrtb_2.12.7. Exact commands for each OS are on this page.
Is CVE-2023-0776 being exploited?
CVE-2023-0776 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-0776 affect?
CVE-2023-0776 affects neutrino 430 firmware, nova430l firmware, nova430e firmware. Severity is high (CVSS 8.1). Baicells Nova 436Q, Nova 430E, Nova 430I, and Neutrino 430 LTE TDD eNodeB devices with firmware through QRTB 2.12.7 are vulnerable to remote shell code exploitation via HTTP command injections. Commands are executed using pre-login executio
How urgent is CVE-2023-0776?
Priority 50/100. High severity; Remotely exploitable, no login, no user action
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