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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.

在 Reyrolle 7SR5（所有低于 V2.70 的版本）中已发现一个漏洞。该漏洞由会话标识符生成算法的随机性不足导致，使得生成的令牌具有低熵，因此可在有限次尝试内被预测或暴力破解。这允许未认证的远程攻击者推导出有效的会话标识符，从而绕过身份验证。

CVSS 7.4 · High

Possible ATT&CK Techniques 1 AI

T1531.002
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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

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 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-2026-62647 7.4 HIGH Reyrolle 7SR5 早期版本随机数可预测漏洞
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-331

V. Comments for CVE-2026-62646

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