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CVE-2026-62647

Quick assessment

Affected
Siemens Reyrolle 7SR5
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

已在 Reyrolle 7SR5（所有低于 V2.70 的版本）中发现一个漏洞。该设备使用一个未用真随机数生成器（TRNG）初始化的随机数生成器来产生与安全相关的值（例如用于身份验证的会话标识符），导致生成的值序列可被预测。这使得未经认证的远程攻击者能够更容易地预测生成的值，从而模仿经过身份验证的合法用户，进而可能获得对设备的未授权访问权限。

CVSS 7.4 · High

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2026-62647

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Siemens Reyrolle 7SR5 0 ~ V2.70 -

II. Public POCs for CVE-2026-62647

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III. Intelligence Information for CVE-2026-62647

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Vendor Advisories for CVE-2026-62647 (1)

Same Patch Batch · Siemens · 2026-09-08 · 13 CVEs total

CVE-2026-62645 9.8 CRITICAL 雷尔勒7SR5 V2.70信息泄露致认证绕过
CVE-2026-50093 9.0 CRITICAL Siveillance OIS模块任意文件上传导致root权限
CVE-2026-62650 8.8 HIGH Reyrolle 7SR5 低版本RBAC绕过致权限提升
CVE-2026-67367 8.6 HIGH SIMOVE Fleetmanager 等目录遍历漏洞
CVE-2026-34223 8.2 HIGH CVE-2026-34223
CVE-2026-62649 7.5 HIGH Reyrolle 7SR5 <2.70 未认证拒绝服务漏洞
CVE-2026-62648 7.5 HIGH 瑞洛尔7SR5 V2.70前URL越界写入致DoS
CVE-2026-62646 7.4 HIGH Reyrolle 7SR5低熵会话标识符预测漏洞
CVE-2026-62654 6.8 MEDIUM Reyrolle 7SR5 (<V2.70) 维护模式未验证代码
CVE-2026-62653 6.8 MEDIUM Reyrolle 7SR5 V2.70前内存损坏及代码执行漏洞
CVE-2026-58113 6.1 MEDIUM Teamcenter多版本认证重定向中XSS漏洞
CVE-2026-62652 5.3 MEDIUM Reyrolle 7SR5低版本固件调试符号泄露

IV. Related Vulnerabilities

Same product: Reyrolle 7SR5
Same vendor: Siemens
Same weakness: CWE-20

V. Comments for CVE-2026-62647

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