Lantronix g520 Series vulnerabilities

2 CVEs affecting Lantronix g520 Series, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-91191, published 2026-09-29.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2026-84409, published 2026-09-29. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. The device's update mechanism retrieves metadata for software updates over an unencrypted HTTP connection and stores portions of that metadata for later use. A management interface subsequently…
• CVE-2026-91191, published 2026-09-29. High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days. The device's update mechanism includes conditions that allow unauthorized software packages to be accepted as authentic. During the boot process, the stock done function disables signature…