Digi Portserver Ts Mei Firmware vulnerabilities

4 CVEs affecting Digi Portserver Ts Mei Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2023-4299, published 2023-08-31.

Highest priority

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

CVE-2021-35977, published 2021-10-08. Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days. An issue was discovered in Digi RealPort for Windows through 4.8.488.0. A buffer overflow exists in the handling of ADDP discovery response messages. This could result in arbitrary code execution.
CVE-2021-35979, published 2021-10-08. High severity, CVSS 8.1. EPSS: 0.9% chance of exploitation in the next 30 days. An issue was discovered in Digi RealPort through 4.8.488.0. The 'encrypted' mode is vulnerable to man-in-the-middle attacks and does not perform authentication.
CVE-2021-36767, published 2021-10-08. Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days. In Digi RealPort through 4.10.490, authentication relies on a challenge-response mechanism that gives access to the server password, making the protection ineffective. An attacker may send an…
CVE-2023-4299, published 2023-08-31. High severity, CVSS 8.1. EPSS: 0.7% chance of exploitation in the next 30 days. Digi RealPort Protocol is vulnerable to a replay attack that may allow an attacker to bypass authentication to access connected equipment.