Siemens Sentron 3wa COM190 Firmware vulnerabilities

3 CVEs affecting Siemens Sentron 3wa COM190 Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2021-31401, published 2021-08-19.

Highest priority

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

CVE-2020-35684, published 2021-08-19. High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days. An issue was discovered in HCC Nichestack 3.0. The code that parses TCP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the length of the TCP…
CVE-2021-31401, published 2021-08-19. High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days. An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1. The TCP header processing code doesn't sanitize the value of the IP total length field (header length + data length).…
CVE-2020-35685, published 2021-08-19. Critical severity, CVSS 9.1. EPSS: 2.1% chance of exploitation in the next 30 days. An issue was discovered in HCC Nichestack 3.0. The code that generates Initial Sequence Numbers (ISNs) for TCP connections derives the ISN from an insufficiently random source. As a result, an…