CVE-2025-8019: A vulnerability was found in Shenzhen Libituo Technology LBT-T300-T310 2.2.3.6

This month

HIGH 8.8MITIGATE

CVE-2025-8019 is a high-severity flaw (CVSS 8.8) affecting lbt-t300-t310 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in Shenzhen Libituo Technology LBT-T300-T310 2.2.3.6. It has been rated as critical. Affected by this issue is the function sub_40B6F0 of the file at/appy.cgi. The manipulation of the argument wan_proto leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 39%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2025-07-22
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: szlbt

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-07-22 16:15 UTCPublished CVE record published
2026-06-17 10:06 UTCUpdated Record last modified

szlbt lbt-t300-t310 firmware MITIGATE

Affected: 2.2.3.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2.3.6

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 source NVD · 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-2025-8019?

lbt-t300-t310 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-8019 being exploited?

CVE-2025-8019 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-2025-8019 affect?

CVE-2025-8019 affects lbt-t300-t310 firmware. Severity is high (CVSS 8.8). A vulnerability was found in Shenzhen Libituo Technology LBT-T300-T310 2.2.3.6. It has been rated as critical. Affected by this issue is the function sub_40B6F0 of the file at/appy.cgi. The manipulation of the argument wan_proto leads to bu

How urgent is CVE-2025-8019?

Priority 51/100. High severity; Public exploit reference

Related CVEs

CVE-2025-7077 HIGH 8.8 UPGRADE A vulnerability classified as critical has been found in Shenzhen Libituo Technology LBT-T300-T310 up to 2.2.3

References

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