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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.

Siemens Reyrolle 7SR5是德国Siemens公司的一款工业控制领域的保护继电器。 Siemens Reyrolle 7SR5 V2.70之前版本存在输入验证错误漏洞，该漏洞源于随机数生成器未使用真随机数生成器初始化，导致生成的安全相关值可预测，可能允许未认证的远程攻击者预测生成值并冒充合法认证用户，从而获得对设备的未授权访问。

CVSS 7.4 · High EPSS 0.56% · P46

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
Siemens Reyrolle 7SR5 < V2.70 affected
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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
Vulnerability Title
Siemens Reyrolle 7SR5 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens Reyrolle 7SR5是德国Siemens公司的一款工业控制领域的保护继电器。 Siemens Reyrolle 7SR5 V2.70之前版本存在输入验证错误漏洞，该漏洞源于随机数生成器未使用真随机数生成器初始化，导致生成的安全相关值可预测，可能允许未认证的远程攻击者预测生成值并冒充合法认证用户，从而获得对设备的未授权访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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 Siemens Reyrolle 7SR5 授权问题漏洞
CVE-2026-50093 9.0 CRITICAL Siemens Siveillance Control Pro 任意文件上传漏洞
CVE-2026-62650 8.8 HIGH Siemens Reyrolle 7SR5 授权问题漏洞
CVE-2026-67367 8.6 HIGH Siemens SIMOVE Fleetmanager 路径遍历漏洞
CVE-2026-34223 8.2 HIGH Siemens Desigo CC ClickOnce Client V6 代码注入漏洞
CVE-2026-62649 7.5 HIGH Siemens Reyrolle 7SR5 资源管理错误漏洞
CVE-2026-62648 7.5 HIGH Siemens Reyrolle 7SR5 缓冲区错误漏洞
CVE-2026-62646 7.4 HIGH Siemens Reyrolle 7SR5 加密问题漏洞
CVE-2026-62653 6.8 MEDIUM Siemens Reyrolle 7SR5 缓冲区错误漏洞
CVE-2026-62654 6.8 MEDIUM Siemens Reyrolle 7SR5 软件供应链问题漏洞
CVE-2026-58113 6.1 MEDIUM Siemens Teamcenter V2412 跨站脚本漏洞
CVE-2026-62652 5.3 MEDIUM Siemens Reyrolle 7SR5 调试信息泄露漏洞

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-62647

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