CVE-2026-62646: CWE-331: Insufficient Entropy in Siemens Reyrolle 7SR5
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.
AI Analysis
Technical Summary
Siemens Reyrolle 7SR5 versions before 2.70 contain a vulnerability classified as CWE-331 (Insufficient Entropy) where session identifiers are generated with inadequate randomness. This flaw produces session tokens that can be feasibly predicted or brute-forced by unauthenticated remote attackers, enabling them to bypass authentication mechanisms. The CVSS v3.1 score is 7.4, indicating high impact on confidentiality and integrity, with no impact on availability. No official patch or remediation level has been disclosed by Siemens as of the publication date.
Potential Impact
An attacker exploiting this vulnerability could gain unauthorized access by deriving valid session identifiers, leading to a compromise of confidentiality and integrity of the affected system. There is no indication of impact on system availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Siemens vendor advisory for current remediation guidance. Until an official fix is available, organizations should monitor Siemens communications for updates. No vendor-provided mitigation or temporary fix has been documented.
CVE-2026-62646: CWE-331: Insufficient Entropy in Siemens Reyrolle 7SR5
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.
CVSS v3.1
Score 7.4high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Siemens Reyrolle 7SR5 versions before 2.70 contain a vulnerability classified as CWE-331 (Insufficient Entropy) where session identifiers are generated with inadequate randomness. This flaw produces session tokens that can be feasibly predicted or brute-forced by unauthenticated remote attackers, enabling them to bypass authentication mechanisms. The CVSS v3.1 score is 7.4, indicating high impact on confidentiality and integrity, with no impact on availability. No official patch or remediation level has been disclosed by Siemens as of the publication date.
Potential Impact
An attacker exploiting this vulnerability could gain unauthorized access by deriving valid session identifiers, leading to a compromise of confidentiality and integrity of the affected system. There is no indication of impact on system availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Siemens vendor advisory for current remediation guidance. Until an official fix is available, organizations should monitor Siemens communications for updates. No vendor-provided mitigation or temporary fix has been documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- siemens
- Date Reserved
- 2026-07-14T16:24:23.430Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9fc954acd9273b49571d8c
Added to database: 09/08/2026, 08:37:40 UTC
Last enriched: 09/08/2026, 08:52:32 UTC
Last updated: 09/09/2026, 01:51:59 UTC
Views: 13
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