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CVE-2026-62647

Reyrolle 7SR5 · Vulnerability

CVSS 3.1 7.4 HIGHCVSS 4.0 9.3 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-62647

Published

A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70). A random number generator is used to generate security-relevant values (such as session identifiers used for authentication purposes) that is not initialized with a True Random Number Generator (TRNG), resulting in a predictable sequence of generated values. This could allow an unauthenticated remote attacker to more easily predict the generated values and impersonate a legitimate authenticated user, potentially gaining unauthorized access to the device.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-62647

Published

Reyrolle 7SR5

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Siemens",
                    "product": "Reyrolle 7SR5",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "V2.70",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unknown"
                }

Original source record · Cite this exact observation · Complete original publisher JSON