CVE-2026-7674
Remote buffer overflow in LBT-T300-HW1 Web UI enables RCE via VPN server params.
Is CVE-2026-7674 being exploited?
Not confirmed. CVE-2026-7674 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.48% probability of exploitation in the next 30 days.
How severe is CVE-2026-7674?
CVE-2026-7674 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-7674?
Not known from our data. No patch reference has been recorded for CVE-2026-7674, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-7674 affect?
CVE-2026-7674 affects LBT-T300-HW1 Web Management Interface (firmware <= 1.2.8). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-7674?
Upgrade firmware when patch is released; restrict remote management exposure.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution on the device via crafted vpn_pptp_server/vpn_l2tp_server parameters, leading to full device compromise.
Patch when possible
- affected1.2.0
- affected1.2.1
- affected1.2.2
- affected1.2.3
- affected1.2.4
- affected1.2.5
- affected1.2.6
- affected1.2.7
- affected1.2.8
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.