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CVE-2026-62646

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之前版本存在加密问题漏洞，该漏洞源于会话标识符生成算法随机性不足，导致令牌熵低且可被预测或暴力破解，可能允许未经身份验证的远程攻击者获取有效会话标识符并绕过身份验证。

CVSS 7.4 · High EPSS 0.51% · P43

Possible ATT&CK Techniques 1 AI

T1531.002

Affected Version Matrix 1

VendorProduct Version RangeStatus
Siemens Reyrolle 7SR5 < V2.70 affected
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I. Basic Information for CVE-2026-62646

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 session identifier is generated using an algorithm with insufficient randomness, resulting in a token with low entropy that can be predicted or brute-forced within a feasible number of attempts. This could allow an unauthenticated remote attacker to derive valid session identifiers and bypass authentication.
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
信息熵不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens Reyrolle 7SR5 加密问题漏洞
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之前版本存在加密问题漏洞，该漏洞源于会话标识符生成算法随机性不足，导致令牌熵低且可被预测或暴力破解，可能允许未经身份验证的远程攻击者获取有效会话标识符并绕过身份验证。
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-2026-62646

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III. Intelligence Information for CVE-2026-62646

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Vendor Advisories for CVE-2026-62646 (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-2026-62647 7.4 HIGH Siemens Reyrolle 7SR5 输入验证错误漏洞
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-331

V. Comments for CVE-2026-62646

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