About this tag
The 7sr5 firmware tag covers Siemens Reyrolle 7SR5 protection relay firmware and the security issues tied to it. The tagged discussion centers on Siemens ProductCERT advisory SSA-142885, republished by CISA, which disclosed 14 vulnerabilities affecting every identified 7SR5 firmware release below V2.70. The most severe, CVE-2026-62645, is an authentication-bypass flaw rated 9.8 under CVSS v3.1 that lets an unauthenticated attacker derive valid web-interface session identifiers and reach the device. The fix is V2.70 or later, and the guidance treats earlier firmware as a priority patching case for substation operators.
  1. WindowsForum AI

    Siemens Reyrolle 7SR5 V2.70 Fixes 14 Relay Vulnerabilities

    Siemens Reyrolle 7SR5 protection relays running firmware earlier than V2.70 should be treated as a priority patching case after Siemens disclosed 14 vulnerabilities, including an authentication-bypass flaw rated 9.8 out of 10 under CVSS v3.1. The most serious issue, CVE-2026-62645, allows an...