CVE-2026-62647

highpriority · track · 30EPSS 0.006 · 47 %ileDENLRUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.56% (47th) EPSS
CVSS 7.4 · high
Is it mine?
47 products
Check your exposure
Who says so?
4 sources
fstec_bdu · cisa_csaf_ot · ncsc_nl · siemens_psirt

EPSS · scored 2026-10-26

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

9.3
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.4–9.3

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · productcert@siemens.com DEexploitability 2.2 · impact 5.2
v3.17.4highAV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU
v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · CISA US
v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · Siemens ProductCERT DE
v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · NCSC-NL NL
v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · productcert@siemens.com DE
v4.08highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-20USCWE-20US
05

affected products (47)

Products and version ranges known to be affected.

showing 20 of 47
06

advisories (3)

Vendor and ecosystem advisories describing this.

  • NCSC-2026-0346Kwetsbaarheden verholpen in Siemens productenNL2026-09-08csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als Desigo, Reyrolle, SIMATIC, SCALANCE, SINAMICS en Siveillance.

  • SSA-142885SSA-142885: Multiple Vulnerabilities in Reyrolle 7SR5 Before V2.702026-09-08csaf · siemens_psirtDE

    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.

  • ICSA-26-258-05Siemens Reyrolle 7SR52026-09-08icsa · cisa_csaf_otUS

    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.

07

also known as (2)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

fstec_bducisa_csaf_otncsc_nlsiemens_psirtNVDCVE.orgMITRE
published 2026-09-08modified 2026-09-29
09

references (1) nvd

External citations — patches, advisories, analysis.

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