High severity · published Sep 8, 2026
CVE-2026-62646
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70)
7.4
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
R7
Reyrolle 7SR5 · Siemens
before V2.70 · source: vendor
In the news
VulnerabilityCritical
Siemens Reyrolle 7SR5
View CSAF
Summary
Siemens Reyrolle 7SR5 Before V2.70 is affected by multiple vulnerabilities. Siemens has released a new version for Reyrolle 7SR5 and recommends to update to the latest version.
The following versions of Siemens Reyrolle 7SR5 are affected:
Reyrolle 7SR5 vers:intdot/<2.70 (CVE-2024-42384, CVE-2024-42385, CVE-2024-42386, CVE-2024-42391, CVE-2024-42392, CVE-2026-62645, CVE-2026-62646, CVE-2026-62647, CVE-2026-62648, CVE-2026-62649, CVE-2026-62650, CVE-2026-62652, CVE-2026-62653, CVE-2026-62654)
CVSS
Vendor
Equipment
Vulnerabilities
v3 9.8
Siemens
Siemens Reyrolle 7SR5
Integer Overflow or Wraparound, Improper Neutralization of Delimiters, Use of Out-of-range Pointer Offset, Missing Authentication for Critical Function, Insufficient Entropy, Improper Input Validation, Out-of-bounds Write, Allocation of Resources Without Limits or Throttling, Authentication Bypass Using an Alternate Path or Channel, Insertion of Sensitive Information Into Debugging Code, Download of Code Without Integrity Check
Background
Critical Infrastructure Sectors: Energy
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany
Vulnerabilities
Expand All +
CVE-2024-42384
Integer Overflow or Wraparound vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and produce a segmentation fault on the application.
View CVE Details
...
Sep 15, 2026·CISA Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-62646
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-62646
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-142885.html
More from Reyrolle 7SR5
9.8
CVE-2026-62645
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70)
8.8
CVE-2026-62650
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70)
7.5
CVE-2026-62649
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70)
7.5
CVE-2026-62648
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70)
7.4
CVE-2026-62647
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70)
